tetra-

(redirected from tetr-)
Also found in: Medical.

tetra-

or tetr-
pref.
1. Four: tetrode.
2. Containing four of a specified kind of atom, radical, or group: tetrachloride.

[Greek; see kwetwer- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

tetra-

or before a vowel

tetr-

combining form
four: tetrameter.
[from Greek]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

tet•ra

(ˈtɛ trə)

n., pl. -ras.
any of several small, brightly colored characin fishes, of tropical American waters.
[1930–35; shortening of New Latin Tetragonopterus former genus name. See tetragon, -o-, -pterous]

tetra-

a combining form meaning “four”: tetralogy.
Also, esp. before a vowel,tetr-.
[< Greek, comb. form of téttares four]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.