/ Dictionary / Index A Amphibia: Meaning and Definition of Find definitions for: Am•phib•i•a Pronunciation: (am-fib'ē-u), [key] — n. the class comprising the amphibians. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: amphibia (Thesaurus) amphiaster amphibian Related Content Daily Word Quiz: drowsy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language