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arc

[ahrk]
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noun
  1. Geometry. any unbroken part of the circumference of a circle or other curved line.
  2. Also called electric arc. Electricity. a luminous bridge formed in a gap between two electrodes.Compare spark1(def 2).
  3. Astronomy. the part of a circle representing the apparent course of a heavenly body.
  4. anything bow-shaped.
verb (used without object), arced [ahrkt] /ɑrkt/ or arcked, arc·ing [ahr-king] /ˈɑr kɪŋ/ or arck·ing.
  1. to form an electric arc.
  2. to move in a curve suggestive of an arc.

Origin of arc

1350–1400; Middle English ark < Latin arcus bow, arch, curve
Can be confusedarc ark
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for arcing

Contemporary Examples

Historical Examples

  • But the bolt caromed harmlessly off the side of the arcing Star Devil!

    Hawk Carse

    Anthony Gilmore

  • Its resistance fell, the arcing decreased; the beam became orange and finally green.

    The Last Evolution

    John Wood Campbell

  • The sun was far below the horizon when it was finished, and the glowing, arcing forces that had made and formed it were stopped.

    The Last Evolution

    John Wood Campbell

  • It is better to have switches of some excess capacity, as the heavy metal stands the arcing much better.

  • Now the blue fireball was arcing down over the hillside, trailing its orange-red comet tail.


British Dictionary definitions for arcing

arc

noun
  1. something curved in shape
  2. part of an unbroken curved line
  3. a luminous discharge that occurs when an electric current flows between two electrodes or any other two surfaces separated by a small gap and a high potential difference
  4. astronomy a circular section of the apparent path of a celestial body
  5. maths a section of a curve, graph, or geometric figure
verb arcs, arcing, arced, arcs, arcking or arcked
  1. (intr) to form an arc
prefix
  1. maths specifying an inverse trigonometric function: usually written arcsin, arctan, arcsec, etc, or sometimes sin –1, tan –1, sec –1, etc

Word Origin

C14: from Old French, from Latin arcus bow, arch

ARC

abbreviation for
  1. AIDS-related complex: an early condition in which a person infected with the AIDS virus may suffer from such mild symptoms as loss of weight, fever, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for arcing

arc

n.

late 14c., originally in reference to the sun's apparent motion in the sky, from Old French arc "bow, arch, vault" (12c.), from Latin arcus "a bow, arch," from PIE root *arku- "bowed, curved" (cf. Gothic arhvazna "arrow," Old English earh, Old Norse ör; also, via notion of "supple, flexible," Greek arkeuthos, Latvian ercis "juniper," Russian rakita, Czech rokyta, Serbo-Croatian rakita "brittle willow"). Electrical sense is from 1821.

arc

v.

1893, in the electrical sense, from arc (n.). Meaning "to move in an arc" attested by 1954. Related: Arced; arcing.

Online Etymology Dictionary, © 2010 Douglas Harper

arcing in Medicine

arc

([object Object])
n.
  1. A curved line or segment of a circle.

ARC

abbr.
  1. AIDS-related complex
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

arcing in Science

arc

[ärk]
  1. A segment of a circle.
  2. See electric arc.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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