/ Dictionary / Index A arc cosecant: Meaning and Definition of Find definitions for: arc' cose'cant Pronunciation: [key] — Trig. Trig. the angle, measured in radians, that has a cosecant equal to a given number. Abbr.: arc csc; Symbol: csc&hasp; Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: arccosecant (Thesaurus) arc cos arc cosine Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language