[ ek-struh ]
/ ˈɛk strə /


beyond or more than what is usual, expected, or necessary; additional: an extra copy of a newspaper; an extra charge.
larger or better than what is usual: an extra binding.



in excess of the usual or specified amount: an extra high price.
beyond the ordinary degree; unusually; uncommonly: done extra well; extra large.

Origin of extra

First recorded in 1770–80; by shortening of extraordinary

Definition for extra (2 of 3)


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

Definition for extra (3 of 3)

ab extra
[ ahb ek-strah; English ab ek-struh ]
/ ɑb ˈɛk strɑ; English æb ˈɛk strə /

adverb Latin.

from the outside.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for extra

British Dictionary definitions for extra (1 of 2)

/ (ˈɛkstrə) /


being more than what is usual or expected; additional



unusually; exceptionallyan extra fast car

Word Origin for extra

C18: perhaps shortened from extraordinary

British Dictionary definitions for extra (2 of 2)



outside or beyond an area or scopeextrasensory; extraterritorial

Word Origin for extra-

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

Medical definitions for extra



Outside; beyond:extracellular.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.