Aperture

[ap·er·ture]

An aperture is an opening, usually a small one. “If you can thread the silk through that aperture and pull it out the other side, we can knot it and create a loop.”

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Concern or solicitude respecting some thing ovent, future or uncertain, which disturbs the mind, and keeps it in a state of painful uneasiness.

Noun
an man-made opening; usually small

Noun
a device that controls amount of light admitted

Noun
a natural opening in something

n.
The act of opening.

n.
An opening; an open space; a gap, cleft, or chasm; a passage perforated; a hole; as, an aperture in a wall.

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.

Aperture

Anx*i"e*ty , n.; pl. Anxieties . [L. anxietas, fr. anxius: cf. F. anxi'82t'82. See Anxious.]67 1. Concern or solicitude respecting some thing ovent, future or uncertain, which disturbs the mind, and keeps it in a state of painful uneasiness.> Ap"er*ture , n. [L. apertura, fr. aperire. See Aperient.] 1. The act of opening. [Obs.] 2. An opening; an open space; a gap, cleft, or chasm; a passage perforated; a hole; as, an aperture in a wall.
An aperture between the mountains.
The back aperture of the nostrils.
3. (Opt.) The diameter of the exposed part of the object glass of a telescope or other optical instrument; as, a telescope of four-inch aperture. &hand; The aperture of microscopes is often expressed in degrees, called also the angular aperture, which signifies the angular breadth of the pencil of light which the instrument transmits from the object or point viewed; as, a microscope of 100° aperture.

Concern or solicitude respecting some thing ovent, future or uncertain, which disturbs the mind, and keeps it in a state of painful uneasiness.

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Usage Examples
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