/ Dictionary / Index A acaricide: Meaning and Definition of Find definitions for: a•car•i•cide Pronunciation: (u-kar'u-sīd", ak'ur-u-), [key] — n. a substance or preparation for killing acarids. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: acaricide (Thesaurus) acariasis acarid Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language