/ Dictionary / Index S semiaquatic: Meaning and Definition of Find definitions for: sem•i•a•quat•ic Pronunciation: (sem"ē-u-kwat'ik, -kwot'-, sem"ī-), [key] — adj. Bot., Zool. partly aquatic; growing or living in or close to water, or carrying out part of its life cycle in water. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: semiaquatic (Thesaurus) semiannual semiarch Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language