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ap·er·ture

aperture

 
 
pronunciation:
ae pr chr
part of speech: noun
definition 1: a narrow opening.
An aperture in the wall allowed us to peek into the room.
synonyms:
crack, opening, slit
similar words:
chink, cleft, eye, eyelet, gap, hole, outlet, pore, vent
definition 2: an opening that controls the amount of light that reaches the lens on a camera.
similar words:
eye, filter, opening
derivations: apertural (adj.), apertured (adj.)