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Arc

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Merriam-Webster's Collegiate DictionaryARCabbreviation1. AIDS-related complex2. American Red Crossarc I \ˈärk\ noun ETYMOLOGY Middle English ark, from Anglo-French arc bow, from Latin arcus bow, arch, arc — more at arrow DATE 14th century 1. the apparent path described above and below the horizon by a celestial body (as the sun)2. a. something arched or curved b. a curved path the arc of a fly ball3. a sustained luminous discharge of electricity across a gap in a circuit or between electrodes; also : arc lamp4. a continuous portion (as of a circle or ellipse) of a curved line5. degree measurement on the circumference of a circle — used especially in the phrase of arc 11 minutes 3 seconds of arc6. a continuous progression or line of development a story's dramatic arc II intransitive verb (arced \ˈärkt\ ; arc·ing \ˈär-kiŋ\) DATE 1893 1. to form an electric arc2. to follow an arc-shaped course III adjective ETYMOLOGY arc sine arc or angle (corresponding to the) sine (of so many degrees) DATE circa 1949 : inverse 2 — used with the trigonometric functions and hyperbolic functions English Etymologyarc late 14c., from O.Frhttp://O.Fr. arc, from L. arcus "a bow, arch," from PIE base *arqu- "bowed, curved" (cf. Goth. arhvazna "arrow," O.E. earh, O.N. ör). Electrical sense is from 1821. Oxford Collocations Dictionary for Students of EnglishOxford Collocations dictionary for students of Englisharc noun ADJ. great, high, long, sweeping, wide firing shells in a high arc over our heads | perfect VERB + ARC describe (technical), form, make forming a perfect arc in the sky PREP. in an ~ The islands lie in a wide arc just off the mainland. Oxford Advanced Learner's Dictionary-牛津双解-OALD7arcarc / B:k; NAmE B:rk / noun1. (geometry 几何) part of a circle or a curved line 弧2. a curved shape 弧形: the arc of a rainbow 彩虹的弧形 The beach swept around in an arc. 海滩呈弧形伸展开来。 3. (technical 术语) an electric current passing across a space between two terminals 电弧⇨ see also arc lampverb(arc·ing / 5B:kiN; NAmE 5B:rk- / , arced, arced / B:kt; NAmE B:rkt / ) ▪ [V] (technical 术语) 1. to move in the shape of an arc 作弧形运动2. to form an electric arc 形成电弧 OLTarc verb⇨ curvearc noun⇨ curveWebster's Third New International Dictionary, UnabridgedARCabbreviationAIDS-related complex hereinarcI. \ˈärk, ˈȧk\ noun(-s)Etymology: Middle English ark, from Middle French arc, from Latin arcus bow, arc — more at arrow1. : the apparent path described above and below the horizon by the sun or other celestial body2. : something that is arched or curved : an arched or curved shape or figure < with eyebrows raised in a quizzical arc > < he bent the twig into an arc >as a. obsolete : arch < triumphal arcs — John Milton > b. : a geologic or topographic feature repeated along a curving line on the earth's surface < island arcs … so well developed in the western Pacific — F.P.Shepard > < volcanic arcs > c. (1) : a sustained brilliantly luminous glow sometimes having the appearance of a curved line of flame that is formed under certain conditions when a break is made in an electric circuit (2) : a spotlight or lamp that uses an electric arc as the light source d. : one of the curved stripes that close the open angle at the bottom or top of certain chevrons on military uniforms e. : the quarter circle enclosing the service box on a squash rackets court3. : a continuous portion of a curved line or path (as part of a circle or an ellipse)4. : angular measure — used chiefly in the phrase of arc < 11 minutes 3 seconds of arc >II. intransitive verb(arced \-kt\ ; arced \“\ ; arcing \-kiŋ\ ; arcs)1. : to form an electric arc2. : to follow or describe a curving course resembling the form of an arc < waterfalls arc outward into … white plumes — C.H.Baker > < the meandering Kum river, arcing around Taejon — Newsweek >III. noun: trajectory : span

Arc Curved A Line To Circle Arced Electric