aperture

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ap·er·ture

 (ăp′ər-chər)
n.
1. An opening, such as a hole, gap, or slit.
2.
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.

[Middle English, from Latin apertūra, from apertus, past participle of aperīre, to open; see wer- in Indo-European roots.]

ap′er·tur′al adj.

aperture

(ˈæpətʃə)
n
1. a hole, gap, crack, slit, or other opening
2. (General Physics) physics
a. a usually circular and often variable opening in an optical instrument or device that controls the quantity of radiation entering or leaving it
b. the diameter of such an opening. See also relative aperture
[C15: from Late Latin apertūra opening, from Latin aperīre to open]

ap•er•ture

(ˈæp ər tʃər)

n.
1. an opening, as a hole, slit, or gap.
2. Also called ap′erture stop`. an opening, usu. circular, that limits the quantity of light that can enter an optical instrument, as the lens of a camera.
[1400–50; late Middle English < Latin apertūra=apert(us), past participle of aperīre to open (see aperient) + -ūra -ure]
ap′er•tured, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.aperture - a device that controls amount of light admittedaperture - a device that controls amount of light admitted
camera, photographic camera - equipment for taking photographs (usually consisting of a lightproof box with a lens at one end and light-sensitive film at the other)
regulator - any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc.
telescope, scope - a magnifier of images of distant objects
2.aperture - a natural opening in somethingaperture - a natural opening in something  
eye, oculus, optic - the organ of sight
pupil - the contractile aperture in the center of the iris of the eye; resembles a large black dot
hole - an opening into or through something
micropyle - minute opening in the wall of an ovule through which the pollen tube enters
stoma, stomate, pore - a minute epidermal pore in a leaf or stem through which gases and water vapor can pass
3.aperture - an man-made openingaperture - an man-made opening; usually small  
embouchure, mouthpiece - the aperture of a wind instrument into which the player blows directly
mouthpiece - a part that goes over or into the mouth of a person; "the mouthpiece of a respirator"
opening - a vacant or unobstructed space that is man-made; "they left a small opening for the cat at the bottom of the door"

aperture

noun opening, space, hole, crack, gap, rent, passage, breach, slot, vent, rift, slit, cleft, eye, chink, fissure, orifice, perforation, eyelet, interstice Through the aperture he could see daylight.

aperture

noun
An open space allowing passage:
Translations
ثقبثُقْب، فَتْحَهفَتْحَة عَدَسَة الكاميرا
clonadíraotvorštěrbina
åbningaperturblændeåbninghul
aukkoreikä
otvor
lencsenyílás
gat, opljósop
開口部
구멍
diafragmaplyšys
atvērumscaurumssprauga
svetelnosť
öppning
ช่อง
açıklıkaralıkdelikdiyafram açıklığıyarık
lỗ hổng

aperture

[ˈæpətʃjʊəʳ] N
1. (= crack) → rendija f, resquicio m
2. (Phot) → abertura f

aperture

[ˈæpərtʃər] n
(= opening) → orifice m, ouverture f
(PHOTOGRAPHY) [camera] → ouverture f (du diaphragme)

aperture

nÖffnung f; (Phot) → Blende f

aperture

[ˈæpətʃjʊəʳ] nfessura (Phot) → apertura

aperture

(ˈӕpətjuə) noun
1. an opening or hole.
2. (the size of) the opening (eg in a camera) through which light passes.

aperture

ثقب štěrbina åbning Öffnung άνοιγμα apertura, orificio aukko ouverture otvor fessura 開口部 구멍 opening åpning otwór abertura отверстие öppning ช่อง açıklık lỗ hổng 小孔

ap·er·ture

n. apertura, abertura, paso, boquete.
References in classic literature ?
Above him was an arched roof and on either hand walls pierced at intervals by apertures covered with wooden doors.
As the door had slipped aside I had noted its great thickness, fully twenty feet, and as it reached its place once more after closing behind us, great cylinders of steel had dropped from the ceiling behind it and fitted their lower ends into apertures countersunk in the floor.
Thrust forward through the large apertures in his ears were two small and finely-shaped sperm whale teeth, presenting their cavities in front, stuffed with freshly-plucked leaves, and curiously wrought at the other end into strange little images and devices.
Our fire was just within the cave, the smoke rising through the apertures between the rocks that I had piled in such a way that they arched inward toward the cliff at the top.
If you stand on its summit and look at these two f-shaped spout-holes, you would take the whole head for an enormous bass-viol, and these spiracles, the apertures in its sounding-board.
The explosion soon followed; the upper rock was lifted from its base by the terrific force of the powder; the lower one flew into pieces; thousands of insects escaped from the aperture Dantes had previously formed, and a huge snake, like the guardian demon of the treasure, rolled himself along in darkening coils, and disappeared.
In the trap-door itself was found a square aperture cut in the wood, apparently with some exceedingly sharp instrument, just behind the bolt which fastened the door on the inner side.
Carthoris tried to support Thuvia, but himself commenced to slide and slip toward the ever-enlarging aperture.
On the floor beside the aperture lay a headless male body of almost heroic proportions, and on either side of this stood a heavily armed warrior, with drawn sword.
Here there was a little more light, for the high-up aperture over the door opened to the air.
When the oat-spry horse had hedged a little his first spurt of speed Jerry broke the lid of his cab and called down through the aperture in the voice of a cracked megaphone, trying to please:
The little pink sloth-creature was still blinking at me when my Ape-man reappeared at the aperture of the nearest of these dens, and beckoned me in.