intra-

intra-

a prefix meaning “within,” used in the formation of compound words: intramural.
Compare intro-.


Origin:
< Late Latin intrā-, representing Latin intrā (adv. and preposition); akin to interior, inter-

inter-, intra-.
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World English Dictionary
intra-
 
prefix
within; inside: intravenous
 
[from Latin intrā on the inside, within; see interior]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

intra-
from L. intra "on the inside, within." Commonly opposed to extra-, but the use of intra as a prefix was rare in classical L.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

intra- pref.
Within: intramedullary.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
intra-  
A prefix meaning "inside" or "within," as in intravenous, within a vein.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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