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...

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

Oscule :: Oscule (n.) One of the excurrent apertures of sponges.

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..

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..

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

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

Umbilicus :: Umbilicus (n.) Either one of the two apertures in the calamus of a feather.

Pupil :: Pupil (n.) The aperture in the iris; the sight, apple, or black of the eye. See the Note under Eye, and Iris..

Stop :: Stop (n.) The closing of an aperture in the air passage, or pressure of the finger upon the string, of an instrument of music, so as to modify the tone; hence, any contrivance by which the sounds of a musical instrument are regulated..

Emissary :: Emissary (a.) Applied to the veins which pass out of the cranium through apertures in its walls.

Stop :: Stop (v. t.) To close, as an aperture, by filling or by obstructing; as, to stop the ears; hence, to stanch, as a wound..

Hyperotreta :: Hyperotreta (n. pl.) An order of marsipobranchs, including the Myxine or hagfish and the genus Bdellostoma. They have barbels around the mouth, one tooth on the plate, and a communication between the nasal aperture and the throat. See Hagfish..

Stigma :: Stigma (v. t.) One of the apertures of the gill of an ascidian, and of Amphioxus..

Subnascent :: Subnasal (a.) Situated under the nose; as, the subnasal point, or the middle point of the inferior border of the anterior nasal aperture..

Peristome :: Peristome (n.) The lip, or edge of the aperture, of a spiral shell..

Bole :: Bole (n.) An aperture, with a wooden shutter, in the wall of a house, for giving, occasionally, air or light; also, a small closet..

Opening :: Opening (n.) A place which is open; a breach; an aperture; a gap; cleft, or hole..

Barker''s Mill :: Barker's mill () A machine, invented in the 17th century, worked by a form of reaction wheel. The water flows into a vertical tube and gushes from apertures in hollow horizontal arms, causing the machine to revolve on its axis..

Resonator :: Resonator (n.) Anything which resounds; specifically, a vessel in the form of a cylinder open at one end, or a hollow ball of brass with two apertures, so contrived as to greatly intensify a musical tone by its resonance. It is used for the study and analysis of complex sounds..

Serpula :: Serpula (n.) Any one of numerous species of tubicolous annelids of the genus Serpula and allied genera of the family Serpulidae. They secrete a calcareous tube, which is usually irregularly contorted, but is sometimes spirally coiled. The worm has a wreath of plumelike and often bright-colored gills around its head, and usually an operculum to close the aperture of its tube when it retracts..

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