词源 |
aperture n.early 15c. (Chaulisc), "an opening, hole, orifice," from Latin apertura "an opening," from apertus, past participle of aperire "to open, uncover," from PIE compound *ap-wer-yo- from *ap- "off, away" (see apo-) + root *wer- (4) "to cover." In optics, "the diameter of the exposed part of a telescope, microscope, etc.," from 1660s. updated on September 23, 2022 |