| 单词 | aperture |
| 释义 | aperture —apertural /ap"euhr choor'euhl/, adj. —apertured, adj. /ap"euhr cheuhr/, n. 1. an opening, as a hole, slit, crack, gap, etc. 2. Also called aperture stop. Optics. an opening, usually circular, that limits the quantity of light that can enter an optical instrument. [1400-50; late ME < L apertura an opening, equiv. to apert(us) opened (ptp. of aperire; aper(i)- (see APERIENT) + -tus ptp. suffix) + -ura -URE] |
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