/ Dictionary / Index P precipitant: Meaning and Definition of Find definitions for: pre•cip•i•tant Pronunciation: (pri-sip'i-tunt), [key] — adj. falling headlong. rushing headlong, rapidly, or hastily onward. hasty; rash. unduly sudden or abrupt. —n. anything that causes precipitation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: precipitant (Thesaurus) precipitancy precipitate Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language