/ Dictionary / Index H hydroelectric: Meaning and Definition of Find definitions for: hy•dro•e•lec•tric Pronunciation: (hī"drō-i-lek'trik), [key] — adj. pertaining to the generation and distribution of electricity derived from the energy of falling water or any other hydraulic source. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hydroelectric (Thesaurus) hydrodynamics hydrofluoric Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language