/ Dictionary / Index S solid injection: Meaning and Definition of Find definitions for: sol'id injec'tion Pronunciation: [key] injection of fuel into an internal-combustion engine without an air blast. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. solidify solidity 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