aperture /ˈapətʃə, ˈapətj(ʊ)ə/


I. noun

1. an opening, hole, or gap.

the bell ropes passed through apertures in the ceiling.
the genital aperture of an insect.
2. a space through which light passes in an optical or photographic instrument, especially the variable opening by which light enters a camera.

a refracting telescope with an aperture of 3 inches.
II. derivatives


– origin late Middle English: from Latin apertura, from apert- ‘opened’, from aperire ‘to open’.

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