/ Dictionary / Index H hydroaerobics: Meaning and Definition of Find definitions for: hy•dro•aer•o•bics Pronunciation: (hī"drō-â-rō'biks), [key] — n. (used with a plural verb) aerobic exercises performed in water, as in a swimming pool. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hydroa hydroairplane Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language