/ Dictionary / Index C certified milk: Meaning and Definition of Find definitions for: cer'tified milk' Pronunciation: [key] milk, either pasteurized or unpasteurized, that is processed in dairies conforming to official medical standards of sanitation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. certified mail certified professional secretary Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language