/ Dictionary / Index A acaleph: Meaning and Definition of Find definitions for: ac•a•leph Pronunciation: (ak'u-lef"), [key] — n. (in former classifications) any coelenterate of the group Acalephae, including the sea nettles and jellyfishes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. acalculia AC and U Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language