| 单词 | arc |
| 释义 | Word Frequency arc(ɑːk) noun 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. mathematics a section of a curve, graph, or geometric figure verbWord forms: arcs, arcing, arced, arcs, arcking or arcked 6. (intransitive) to form an arc prefix 7. mathematics specifying an inverse trigonometric function: usually written arcsin, arctan, arcsec, etc, or sometimes sin –1, tan –1, sec –1, etc Word origin C14: from Old French, from Latin arcus bow, archWord Frequency ARCabbreviation for 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 |
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