a present participle of .
Geometry. any unbroken part of the circumference of a circle or other curved line.
Also called electric arc. Electricity. a luminous bridge formed in a gap between two electrodes.
Compare 1 (def 2).
Astronomy. the part of a circle representing the apparent course of a heavenly body.
to form an .
to move in a curve suggestive of an arc.
something curved in shape
part of an unbroken curved line
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
(astronomy) a circular section of the apparent path of a celestial body
(maths) a section of a curve, graph, or geometric figure
verb arcs, arcing, arced, arcs, arcking, arcked
(intransitive) to form an arc
(maths) specifying an inverse trigonometric function: usually written arcsin, arctan, arcsec, etc, or sometimes sin–1, tan–1, sec–1, etc
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
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.
1893, in the electrical sense, from arc (n.). Meaning “to move in an arc” attested by 1954. Related: Arced; arcing.
A curved line or segment of a circle.
A segment of a circle.
See electric arc.
Addiction Research Center
advance readers copy
amateur radio club
American Red Cross
[National Aeronautics and Space Administration] Ames Research Center
Appalachian Regional Commission
abbreviation Associate of the Royal College of Music
noun 1/60 of a degree of an angle
arcnet networking A network developed by DataPoint. ARCnet was proprietary until the late 1980s and had about as large a marketshare as Ethernet among small businesses. It was almost as fast and was considerably cheaper at the time. (1995-01-16)
(of the performance of a passage for stringed instruments) with the bow. Historical Examples I can’t get a decent woman to come there and live, and the women at arco won’t speak to me because I’m livin’ there alone. The Cup of Trembling and Other Stories Mary Hallock Foote Not so the arco San Andres, […]