/ Dictionary / Index A arcane: Meaning and Definition of Find definitions for: ar•cane Pronunciation: (är-kān'), [key] — adj. known or understood by very few; mysterious; secret; obscure; esoteric: She knew a lot about Sanskrit grammar and other arcane matters. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: arcane (Thesaurus) Arcady arcanist Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language