/ Dictionary / Index D dynamic headroom: Meaning and Definition of Find definitions for: dynam'ic head'room Pronunciation: [key] — Audio. Audio. the additional power output capability of an amplifier when producing short-term peak signals, compared with its continuous-signal power rating. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dynamic braking dynamic meteorology Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language