/ Dictionary / Index M massicot: Meaning and Definition of Find definitions for: mas•si•cot Pronunciation: (mas'i-kot"), [key] — n. monoxide of lead, PbO, in the form of a yellow powder, used as a pigment and drier. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: massicot (Thesaurus) mass hysteria massif Related Content Daily Word Quiz: dissonant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language