/ Dictionary / Index N neon tetra: Meaning and Definition of Find definitions for: ne'on tet'ra Pronunciation: [key] a small, brightly colored red and blue characin fish, Pracheirodon innesi, native to parts of the Amazon basin: a popular aquarium fish. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. neon lamp neoorthodox Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language