/ Dictionary / Index H hydroscope: Meaning and Definition of Find definitions for: hy•dro•scope Pronunciation: (hī'dru-skōp"), [key] — n. an optical device for viewing objects below the surface of water. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hydros. hydroseed Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language