[ te-truh ]
/ ˈtɛ trə /
any of several tropical, freshwater fishes of the family Characidae, often kept in aquariums.
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Definition for tetra (2 of 2)
a combining form meaning “four,” used in the formation of compound words: tetrabranchiate.
Also especially before a vowel, tetr-.
Origin of tetra-
<Greek, combining form of téttara, neuter of téttaresfour
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for tetra (1 of 2)
/ (ˈtɛtrə) /
noun plural -ra or -ras
any of various brightly coloured tropical freshwater fishes of the genus Hemigrammus and related genera: family Characidae (characins)
Word Origin for tetra
C20: short for New Latin tetragonopterus (former genus name), from tetragon + -o- + -pterous, from Greek pteron wing
British Dictionary definitions for tetra (2 of 2)
before a vowel tetr-
Word Origin for tetra-
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for tetra
Composed of or containing four atoms, molecules, or groups:tetrasaccharide.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.