/ Dictionary / Index G grain growth: Meaning and Definition of Find definitions for: grain' growth" Pronunciation: [key] — Metall. Metall. a tendency of certain grains to grow and absorb others when heated under certain conditions. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Grainger grain itch mite Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language