nocturnal arc

nocturnal arc
the portion of the diurnal circle that is below the horizon of a given point. Cf. diurnal arc.
[1695-1705]

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Universalium. 2010.

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  • nocturnal arc — Astron. the portion of the diurnal circle that is below the horizon of a given point. Cf. diurnal arc. [1695 1705] * * * nocturnal arc, Archaic. the part of the diurnal circle of a heavenly body below the horizon …   Useful english dictionary

  • Arc — Arc, n. [F. arc, L. arcus bow, arc. See {Arch}, n.] 1. (Geom.) A portion of a curved line; as, the arc of a circle or of an ellipse. [1913 Webster] 2. A curvature in the shape of a circular arc or an arch; as, the colored arc (the rainbow); the… …   The Collaborative International Dictionary of English

  • arc´like´ — arc «ahrk», noun, verb, arced «ahrkt», arc|ing «AHR kihng», or arcked, arck|ing. –n. 1. any part of the circumference of a circle. 2. any part of any curved line. 3. a …   Useful english dictionary

  • Electric arc — Arc Arc, n. [F. arc, L. arcus bow, arc. See {Arch}, n.] 1. (Geom.) A portion of a curved line; as, the arc of a circle or of an ellipse. [1913 Webster] 2. A curvature in the shape of a circular arc or an arch; as, the colored arc (the rainbow);… …   The Collaborative International Dictionary of English

  • Voltaic arc — Arc Arc, n. [F. arc, L. arcus bow, arc. See {Arch}, n.] 1. (Geom.) A portion of a curved line; as, the arc of a circle or of an ellipse. [1913 Webster] 2. A curvature in the shape of a circular arc or an arch; as, the colored arc (the rainbow);… …   The Collaborative International Dictionary of English

  • diurnal arc — noun : the portion of the diurnal circle of a celestial body that is above the observer s horizon the diurnal arc of the sun is its apparent path from sunrise to sunset * * * Astron. the portion of the diurnal circle that is above the horizon at… …   Useful english dictionary

  • diurnal arc — Astron. the portion of the diurnal circle that is above the horizon at a given point. Cf. nocturnal arc. * * * …   Universalium

  • Diurnal arc — Diurnal Di*ur nal, a. [L. diurnalis, fr. dies day. See {Deity}, and cf. {Journal}.] 1. Relating to the daytime; belonging to the period of daylight, distinguished from the night; opposed to {nocturnal}; as, diurnal heat; diurnal hours. [1913… …   The Collaborative International Dictionary of English

  • photoreception — photoreceptive, adj. /foh toh ri sep sheuhn/, n. the physiological perception of light. [1905 10; PHOTO + RECEPTION] * * * Biological responses to stimulation by light, most often referring to the mechanism of vision. In one celled organisms such …   Universalium

  • Francisco Guerrero (comics) — El Gato Negro Francisco as El Gato Negro. Art by Richard Dominguez Publication information …   Wikipedia

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