Try Our Apps


Avoid these words. Seriously.


a prefix meaning “outside,” “beyond,” freely used as an English formative:
extrajudicial; extraterritorial; extra-atmospheric.
Also, extro-.
Origin of extra-
< Latin, combining form of extrā (adv. and preposition) outside (of), without Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
Cite This Source
British Dictionary definitions for extra-


outside or beyond an area or scope: extrasensory, extraterritorial
Word Origin
from Latin extrā outside, beyond, changed from extera, from exterus outward
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
Cite This Source
Word Origin and History for extra-

only recorded in classical Latin in extraordinarius, but much used in Medieval Latin and modern formations; it represents Latin extra (adv.) "on the outside, without, except," the old fem. ablative singular of exterus "outward, outside," comparative of ex "out of" (see ex-).

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
extra- in Medicine

extra- or extro-
Outside; beyond: extracellular.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source

Word of the Day

Nearby words for extra-

Word Value for extra

Scrabble Words With Friends