arc (third-person singular simple present arcs, present participle arcing or arcking or arking, simple past and past participle arced or arcked or arked)
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.
5.to form an electric arc.
6.to move in a curve suggestive of an arc.
1.Pathology. AIDS-related complex.
1.American Red Cross.
1.Jeanne[zhahn]/ʒɑn/(Show IPA), Joan of Arc.
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, arcked
6. (intransitive) to form an arc prefix
7. (maths) specifying an inverse trigonometric function, usually written arcsin, arctan, arcsec, etc, or sometimes sin–1, tan–1, sec–1, etc Word OriginC14, from Old French, from Latin arcus bow, arch ARC abbreviation
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 © HarperCollinsPublishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cite This Source
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 182
1893, in the electrical sense, from arc (n.). Meaning "to move in an arc" attested by 195
4. Related, Arced; arcing.
1. Addiction Research Center
2. advance readers copy
3. AIDS-related complex
4. amateur radio club
5. American Red Cross
6. [National Aeronautics and Space Administration] Ames Research Center
7. Appalachian Regional Commission The American Heritage® Abbreviations Dictionary, Third EditionCopyright © 2005 by Houghton Mifflin Company.Published by Houghton Mifflin Company. All rights reserved. Cite This Source
An arc of lightning left her father's hand and slammed the stranger into the wall.
He hooked the light to his belt where it swung in an eerie arc, casting jumping shadows on the rock-strewn slope and yellow streaks into nothingness.
He emerged from the shadow world in a luxurious penthouse suite in Paris overlooking the Arc de Triomphe.
They were in a burnt-out room…with the Arc de Triomphe a short distance away.
5837-5840) arc earlier than the Social War, and present no local characteristic.
X 5 mm., the sides of this square being parallel spider webs 4" of arc apart; the size of the square is reckoned from centre to centre of these double webs.
The voyage of Lord Anson to the Pacific in 1740-1744 was of a predatory character, and he lost more than half his men from scurvy; while it is not pleasant to reflect that at the very time when the French and Spaniards were measuring an arc of the meridian at Quito, the British under Anson were pillaging along the coast of the Pacific and burning the town of Payta.
The shortest line joining any two points is an arc of a great circle.
I am going because... well, because everyone is going: and besides--I am not Joan of Arc or an Amazon.
Learn More about arc