/ Dictionary / Index B biorhythmics: Meaning and Definition of Find definitions for: bi•o•rhyth•mics Pronunciation: (bī"ō-ri'miks), [key] — n. (used with a sing. v.) the study of biorhythms. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. biorhythm BIOS Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language