/ Dictionary / Index E equal temperament: Meaning and Definition of Find definitions for: e'qual tem'perament Pronunciation: [key] — Music. Music. the division of an octave into 12 equal semitones, as in the tuning of a piano. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. equal sign equal time Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language