aperture
/ˈæp.ɚˌt͡ʃʊɹ/
Word Rarity
Rare
Frequency: 3.47 in modern English
10
Scrabble Score
8
Letters
3
Syllables
6
Unique Chars
Meaning
noun
The (typically) large-diameter antenna used for receiving and transmitting radio frequency energy containing the data used in communication satellites, especially in the geostationary belt. For a comsat, this is typically a large reflective dish antenna; sometimes called an array.
noun
The maximum angle between the two generatrices.
Example Sentences
- "an aperture in a wall"
- "Were the larynx of the little creature like that of the parent, the milk might—probably would—enter the windpipe and cause suffocation : but the fœtal larynx is cone-shaped, with the opening at the apex, which projects, as in the whale-tribe, into the back aperture of the nostrils, where it is closely embraced by muscles of the ‘soft palate.’"
- "In the centre of the fleshy membrane is an aperture leading into a deep cavity, at the bottom of which is placed a prominent piston that may be retracted by muscular fibres provided for the purpose."
- "The door was opened — ‘on the chain.’ The old lady peered at us through an aperture of about six inches."
- "This telescope has a 100 cm aperture."
- "If the generatrix makes an angle θ to the axis, then the aperture is 2θ."
Etymology
Origin
Word Breakdown
- Root: -, apertūra
Regional Pronunciation
- American English: /ˈæp.ɚˌt͡ʃʊɹ/
- British English: /ˈap.ə.t͡ʃə/