Definition of Aperture

1. Noun. A device that controls amount of light admitted.

Group relationships: Camera, Photographic Camera, Scope, Telescope
Generic synonyms: Regulator

2. Noun. A natural opening in something.
Group relationships: Eye, Oculus, Optic
Specialized synonyms: Pupil, Micropyle, Pore, Stoma, Stomate
Generic synonyms: Hole

3. Noun. An man-made opening; usually small.
Specialized synonyms: Embouchure, Mouthpiece, Mouthpiece
Generic synonyms: Opening

Definition of Aperture

1. n. The act of opening.

Definition of Aperture

1. Noun. An opening; an open space; a gap, cleft, or chasm; a passage perforated; a hole; as, an aperture in a wall. ¹

2. Noun. (optics) Something which restricts the diameter of the light path through one plane in an optical system. ¹

3. Noun. (context: astronomy photography) The diameter of the aperture (in the sense above) which restricts the width of the light path through the whole system. For a telescope, this is the diameter of the objective lens. e.g. a telescope may have a 100 cm aperture. ¹

4. Noun. (mathematics rare of a right circular cone) The maximum angle between the two generatrices. ¹

¹ Source: wiktionary.com

Definition of Aperture

1. an opening [n -S] - See also: opening

Medical Definition of Aperture

1. The opening in an optical system which restricts the size of the bundle of rays incident on a given surface. (Usually circular and specified by diameter.) (09 Oct 1997)

Lexicographical Neighbors of Aperture

apertura externa aqueductus vestibuli
apertura externa canaliculi cochleae
apertura lateralis ventriculi quarti
apertura mediana ventriculi quarti
apertura piriformis
apertura sinus frontalis
apertura sinus sphenoidalis
apertura thoracis inferior
apertura thoracis superior
apertura tympanica canaliculi chordae tympani
apertural
aperturate
aperture (current term)
aperture correction
aperture diaphragm
aperture for electron microscopy
aperture function
aperture membrane
aperture of mastoid antrum
aperture of orbit
aperture plane
apertured
apertures
apery
apes

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