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aperture |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.42 sec. |
apertureAn orifice. It often refers to an opening in which light is allowed to pass in optical systems such as cameras and lasers. See f-stop and numerical aperture. aperture 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 How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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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. 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. he had said for the third time, to his comedians, speaking machines; then as he was marching with great strides in front of the marble table, a fancy seized him to go and appear in his turn at the aperture of the chapel, were it only for the pleasure of making a grimace at that ungrateful populace. |
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