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20th
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
adeterminerUS /ə/
used before a singular noun to mean one of a group, when it is not a particular one
From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
afterprepositionUS /ˈæftər/
later than; following
From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
andeterminerUS /æn/
the form of “a” used before a word that begins with a vowel sound
From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
andconjunctionUS /ənd/
used to join words or parts of a sentence that go together
From this reading There is an important difference between a field-glass and a telescope, which it is well to recall here.
applied
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From this reading A field-glass is composed of a tube which carries at its upper extremity a convex glass called an object-glass, and at its lower extremity a second glass called ocular, to which the eye of the observer is applied.
atprepositionUS /æt/
in or near a particular place or position
From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
beauxiliary verbUS /biː/
used with a past participle to form the passive, or with -ing for continuous tenses
From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
beingauxiliary verbUS /ˈbiːɪŋ/
the -ing form of “be”
From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
betweenprepositionUS /bɪˈtwiːn/
in the space, time, or range separating two things
From this reading There is an important difference between a field-glass and a telescope, which it is well to recall here.
called
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From this reading A field-glass is composed of a tube which carries at its upper extremity a convex glass called an object-glass, and at its lower extremity a second glass called ocular, to which the eye of the observer is applied.
Cambridge
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
carries
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From this reading A field-glass is composed of a tube which carries at its upper extremity a convex glass called an object-glass, and at its lower extremity a second glass called ocular, to which the eye of the observer is applied.
closed
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
Club
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
composed
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From this reading A field-glass is composed of a tube which carries at its upper extremity a convex glass called an object-glass, and at its lower extremity a second glass called ocular, to which the eye of the observer is applied.
construction
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
convex
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From this reading A field-glass is composed of a tube which carries at its upper extremity a convex glass called an object-glass, and at its lower extremity a second glass called ocular, to which the eye of the observer is applied.
credited
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
difference
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From this reading There is an important difference between a field-glass and a telescope, which it is well to recall here.
enough
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From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
extremity
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From this reading A field-glass is composed of a tube which carries at its upper extremity a convex glass called an object-glass, and at its lower extremity a second glass called ocular, to which the eye of the observer is applied.
eye
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading A field-glass is composed of a tube which carries at its upper extremity a convex glass called an object-glass, and at its lower extremity a second glass called ocular, to which the eye of the observer is applied.
feet
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From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
field-glass
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From this reading There is an important difference between a field-glass and a telescope, which it is well to recall here.
forprepositionUS /fɔːr/
intended to be given to, or used by, somebody
From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
glass
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading A field-glass is composed of a tube which carries at its upper extremity a convex glass called an object-glass, and at its lower extremity a second glass called ocular, to which the eye of the observer is applied.
Gun
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
hadauxiliary verbUS /hæd/
the past form of “have”, used to form the past perfect
From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
herenounUS /here/
an important story-specific word used in this passage
From this reading There is an important difference between a field-glass and a telescope, which it is well to recall here.
important
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From this reading There is an important difference between a field-glass and a telescope, which it is well to recall here.
instrument
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
isauxiliary verbUS /ɪz/
the form of “be” used with he, she, it, or a singular noun
From this reading There is an important difference between a field-glass and a telescope, which it is well to recall here.
itpronounUS /ɪt/
a thing, animal, or idea already mentioned
From this reading There is an important difference between a field-glass and a telescope, which it is well to recall here.
itsdeterminerUS /ɪts/
belonging to the thing or animal already mentioned
From this reading A field-glass is composed of a tube which carries at its upper extremity a convex glass called an object-glass, and at its lower extremity a second glass called ocular, to which the eye of the observer is applied.
leastnounUS /least/
an important story-specific word used in this passage
From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
list
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
lower
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading A field-glass is composed of a tube which carries at its upper extremity a convex glass called an object-glass, and at its lower extremity a second glass called ocular, to which the eye of the observer is applied.
moon
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From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
MOUNTAINS
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From this reading THE TELESCOPE OF THE ROCKY MOUNTAINS.
necessary
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
nine
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From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
object
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From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
object-glass
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading A field-glass is composed of a tube which carries at its upper extremity a convex glass called an object-glass, and at its lower extremity a second glass called ocular, to which the eye of the observer is applied.
Observatory
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
observer
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading A field-glass is composed of a tube which carries at its upper extremity a convex glass called an object-glass, and at its lower extremity a second glass called ocular, to which the eye of the observer is applied.
October
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
ocular
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading A field-glass is composed of a tube which carries at its upper extremity a convex glass called an object-glass, and at its lower extremity a second glass called ocular, to which the eye of the observer is applied.
OFprepositionUS /ʌv/
belonging to, or connected with, somebody or something
From this reading THE TELESCOPE OF THE ROCKY MOUNTAINS.
OnprepositionUS /ɑːn/
touching and supported by a surface
From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
optical
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
powerful
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From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
preceding
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
president
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
recall
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From this reading There is an important difference between a field-glass and a telescope, which it is well to recall here.
render
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From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
ROCKY
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading THE TELESCOPE OF THE ROCKY MOUNTAINS.
second
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading A field-glass is composed of a tube which carries at its upper extremity a convex glass called an object-glass, and at its lower extremity a second glass called ocular, to which the eye of the observer is applied.
subscription
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
sums
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
surface
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From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
TELESCOPE
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From this reading THE TELESCOPE OF THE ROCKY MOUNTAINS.
THEdeterminerUS /ðə/
used before a noun that is already known, already mentioned, or the only one of its kind
From this reading THE TELESCOPE OF THE ROCKY MOUNTAINS.
There
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading There is an important difference between a field-glass and a telescope, which it is well to recall here.
ThisdeterminerUS /ðɪs/
used for a person or thing that is near, or that has just been mentioned
From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
toparticleUS /tuː/
used before the base form of a verb to make the infinitive
From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
tube
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading A field-glass is composed of a tube which carries at its upper extremity a convex glass called an object-glass, and at its lower extremity a second glass called ocular, to which the eye of the observer is applied.
upper
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading A field-glass is composed of a tube which carries at its upper extremity a convex glass called an object-glass, and at its lower extremity a second glass called ocular, to which the eye of the observer is applied.
vast
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
visible
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
wasauxiliary verbUS /wɑːz/
the past form of “be” used with I, he, she, it, or a singular noun
From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
well
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading There is an important difference between a field-glass and a telescope, which it is well to recall here.
whichpronounUS /wɪtʃ/
used to introduce a clause giving more about a thing just mentioned
From this reading There is an important difference between a field-glass and a telescope, which it is well to recall here.
wide
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading This telescope was to be powerful enough to render visible on the surface of the moon an object being at least nine feet wide.
withprepositionUS /wɪð/
in the company of; together with
From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
year
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From this reading On the 20th of October of the preceding year, after the subscription list was closed, the president of the Gun Club had credited the Cambridge Observatory with the sums necessary for the construction of a vast optical instrument.
