/ Dictionary / Index C compressed air: Meaning and Definition of Find definitions for: compressed' air' Pronunciation: [key] air compressed, esp. by mechanical means, to a pressure higher than the surrounding atmospheric pressure. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. compressed compressed petroleum gas Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language