Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of aperture is as below...

Effuse :: Effuse (a.) Having the lips, or edges, of the aperture abruptly spreading; -- said of certain shells..

Clepsydra :: Clepsydra (n.) A water clock; a contrivance for measuring time by the graduated flow of a liquid, as of water, through a small aperture. See Illust. in Appendix..

Megastome :: Megastome (n.) One of a group of univalve shells, having a large aperture or mouth..

Epiphragm :: Epiphragm (n.) A membranaceous or calcareous septum with which some mollusks close the aperture of the shell during the time of hibernation, or aestivation..

Siphonostomatous :: Siphonostomatous (a.) Having the front edge of the aperture of the shell prolonged in the shape of a channel for the protection of the siphon; -- said of certain gastropods.

Thurl :: Thurl (n.) A hole; an aperture.

Stomatopod :: Stomatoplastic (a.) Of or pertaining to the operation of forming a mouth where the aperture has been contracted, or in any way deformed..

Hourglass :: Hourglass (n.) An instrument for measuring time, especially the interval of an hour. It consists of a glass vessel having two compartments, from the uppermost of which a quantity of sand, water, or mercury occupies an hour in running through a small aperture unto the lower..

Aperture :: Aperture (n.) The act of opening.

Vent :: Vent (v. t.) To let out at a vent, or small aperture; to give passage or outlet to..

Machicolation :: Machicolation (n.) The act of discharging missiles or pouring burning or melted substances upon assailants through such apertures.

Imperforated :: Imperforated (a.) Not perforated; having no opening or aperture.

Leak :: Leak (v.) The entrance or escape of a fluid through a crack, fissure, or other aperture; as, the leak gained on the ship's pumps..

Labium :: Labium (n.) Inner margin of the aperture of a shell.

Fauces :: Fauces (n.pl.) That portion of the interior of a spiral shell which can be seen by looking into the aperture.

Stoma :: Stoma (n.) One of the minute apertures between the cells in many serous membranes.

Aperture :: Aperture (n.) The diameter of the exposed part of the object glass of a telescope or other optical instrument; as, a telescope of four-inch aperture..

Shutter :: Shutter (n.) A removable cover, or a gate, for closing an aperture of any kind, as for closing the passageway for molten iron from a ladle..

Perforation :: Perforation (n.) A hole made by boring or piercing; an aperture.

Aprocta :: Aprocta (n. pl.) A group of Turbellaria in which there is no anal aperture.

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