Breadcrumb Home > Dictionary > Index - -plast: Meaning and Definition of Find definitions for: -plast Pronunciation: [key] a combining form meaning “living substance,” “organelle,” “cell,” used in the formation of compound words: chloroplast; chromoplast; protoplast. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Plassey plaster TrendingHere are the facts and trivia that people are buzzing about. Ramadan and Eid al-Fitr 42 Best War Movie Quotes Current Events This Week: March 2023 Recycling Facts William Shakespeare Worst U.S. Forest Fires ✖ Related Content Daily Word Quiz: nonplus Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language