/ Dictionary / Index H hydroponics: Meaning and Definition of Find definitions for: hy•dro•pon•ics Pronunciation: (hī"dru-pon'iks), [key] — n. (used with a sing. v.) the cultivation of plants by placing the roots in liquid nutrient solutions rather than in soil; soilless growth of plants. Cf. aeroculture, geoponics (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hydroponics (Thesaurus) hydropneumatization hydropower Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language