Aperture: alternatives and connections

The mouth of a river; also, the mouth of a cannon.

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An opening in the membranes surrounding the ovum, by which nutrition is assisted and the entrance of the spermatozoa permitted.

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The part of a musical or other instrument to which the mouth is applied in using it; as, the mouthpiece of a bugle, or of a tobacco pipe.

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One of the minute orifices in an animal or vegetable membrane, for transpiration, absorption, etc.

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

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One of the minute apertures between the cells in many serous membranes.

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A stoma.

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Whole.

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of Open

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One who, or that which, regulates.

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A chamber, or instrument having a chamber. Specifically: The camera obscura when used in photography. See Camera, and Camera obscura.

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A brood; as, an eye of pheasants.

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An eye; (Bot.) a leaf bud.

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The organ of sight; an eye.

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That at which one aims; the thing or end to which the mind directs its view; that which is purposed to be reached or accomplished; hence, ultimate de…

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An optical instrument used in viewing distant objects, as the heavenly bodies.

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