| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024arc /ɑrk/USA pronunciation n. [countable]- Mathematicsany unbroken part of the circumference of a circle:an arc of twenty degrees.
- something curved or arched like a bow.
- Electricitythe light formed in a gap between two electrodes when electricity flows through them:the arc of the light bulb.
v. [no object] - Electricityto form an electric arc:The current arced across the electrodes.
- to move in a curved line:The ball arced through the air.
ARC or A.R.C.,an abbreviation of:- American Red Cross.
WordReference Random House Unabridged Dictionary of American English © 2024arc (ärk),USA pronunciation n., v., arced (ärkt)USA pronunciation or arcked, arc•ing (är′king)USA pronunciation or arck•ing.
n. - Mathematics[Geom.]any unbroken part of the circumference of a circle or other curved line.
- ElectricityAlso called electric arc. a luminous bridge formed in a gap between two electrodes. Cf. spark1 (def. 2).
- Astronomythe part of a circle representing the apparent course of a heavenly body.
- anything bow-shaped.
v.i. - Electricityto form an electric arc.
- to move in a curve suggestive of an arc.
- Latin arcus bow, arch, curve
- Middle English ark 1350–1400
ARC (ärk),USA pronunciation - Pathology, n. See AIDS-related complex.
ARC, - American Red Cross.
Also, A.R.C. Collins Concise English Dictionary © HarperCollins Publishers:: arc /ɑːk/ n - 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
- a section of a curve, graph, or geometric figure
vb (arcs, arcing, arced, arcs, arcking, arcked)- (intransitive) to form an arc
prefix - specifying an inverse trigonometric function: usually written arcsin, arctan, arcsec, etc, or sometimes sin–1, tan–1, sec–1, etc
Etymology: 14th Century: from Old French, from Latin arcus bow, arch |