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.
It arced through the sunlight, went spinning down, became a dot, its screaming faded.
Raiders Invisible Desmond Winter Hall
He didn’t even see the fist that arced upward and smashed into his jaw.
By Proxy Gordon Randall Garrett
Dennis roared again, pushed away and arced the knife at his throat.
Ten From Infinity Paul W. Fairman
John Andrew yelled at him as he arced forward, but it was too late.
Stairway to the Stars Larry Shaw
As it rose, it grew perceptibly larger, to dwindle again as it arced over the western horizon.
Astounding Stories, July, 1931 Various
The Nipe arced backwards in a half-somersault and landed flat on his back.
Anything You Can Do Gordon Randall Garrett
Above the sun it arced its way into the heavens in the direction in which they knew Mars lay.
Giants on the Earth Sterner St. Paul Meek
It arced over the bare strip between the two armies and fell in the Tartar mass without result that he could see.
The Saracen: Land of the Infidel Robert Shea
The scout ship responded like a nervous horse and fluttered away as the rocket burned and arced beneath the underbelly.
The Sex Life of the Gods Michael Knerr
The Nipe arced backward in a half somersault and landed flat on his back.
Anything You Can Do … Gordon Randall Garrett
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
316–241 b.c, Greek philosopher. Historical Examples Arcesilaus attacked especially their doctrine of the criterion of truth. A Critical History of Greek Philosophy W. T. Stace Seneca is of opinion, that he was suspected to be as much given to wine as Arcesilaus. Ebrietatis Encomium Boniface Oinophilus The same thing, but not designed by him, despatched […]
a son of Zeus and Euryodia, father of Laertes, and grandfather of Odysseus.
. archaeon (är’kē-ŏn’) Plural archaea Any of a group of microorganisms that resemble bacteria but are different from them in certain aspects of their chemical structure, such as the composition of their cell walls. Archaea usually live in extreme, often very hot or salty environments, such as hot mineral springs or deep-sea hydrothermal vents, but […]
Theology. a chief or principal angel; in medieval angelology one of the nine orders of celestial attendants on God. Compare (def 1). (def 1). Russian Arkhangelsk. a seaport in the NW Russian Federation in Europe, on Dvina Bay. Gulf of, former name of . Contemporary Examples Religion, mythology, and history were plundered for nouns; hence, […]