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aperture
The definition of an aperture is a crevice, hole, or separation.
(noun)An example of an aperture is the opening in a camera lense.
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See aperture in Webster's New World College Dictionary
noun
- an opening; hole; gap
- the opening, or the diameter of the opening, in a camera, telescope, etc. through which light passes into the lens
Origin: L apertura < apertus, pp. of aperire, to open < IE *ap-wer-, to uncover < base *ap(o)- away + *wer- to close, cover > warn
See aperture in American Heritage Dictionary 4
noun
- An opening, such as a hole, gap, or slit.
- a. A usually adjustable opening in an optical instrument, such as a camera or telescope, that limits the amount of light passing through a lens or onto a mirror.b. The diameter of such an opening, often expressed as an f-number.c. The diameter of the objective of a telescope.
Origin:
Origin: Middle English
Origin: , from Latin apertūra
Origin: , from apertus
Origin: , past participle of aperīre, to open; see wer-4 in Indo-European roots
.Related Forms:
- apˈer·turˌal adjective
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