/ Dictionary / Index A Apgar score: Meaning and Definition of Find definitions for: Ap'gar score" Pronunciation: [key] a numerical measure of the physical health of a newborn infant derived by evaluating heart rate, muscle tone, respiratory effort, response to stimulation, skin color, and other physiological indicators. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Apgar aph. Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language