/ Dictionary / Index P Post-it: Meaning and Definition of Find definitions for: Post-it Pronunciation: (pōst'it), [key] a small notepad with an adhesive strip on the back of each sheet that allows it to stick to smooth surfaces and be repositioned with ease. a sheet from such a pad. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: post-it (Thesaurus) posting postlapsarian Related Content Daily Word Quiz: designate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language