/ Dictionary / Index P precautionary: Meaning and Definition of Find definitions for: pre•cau•tion•ar•y Pronunciation: (pri-kô'shu-ner"ē), [key] — adj. of, pertaining to, or characterized by precaution: precautionary measures. expressing or advising precaution: precautionary warnings against possible tornadoes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: precautionary (Thesaurus) precaution precautious 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