a prefix, meaning “inwardly,” “within,” occurring in loanwords from Latin (introspection); occasionally used in the formation of new words (introjection).

Nearby words

  1. intrinsic parity,
  2. intrinsic reflex,
  3. intrinsic semiconductor,
  4. intrinsic sphincter,
  5. intro,
  6. intro.,
  7. introduce,
  8. introducer,
  9. introduction,
  10. introductory

Compare intra-.

Origin of intro-

< Latin, representing intrō (adv.) inwardly, within Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for intro-



in, into, or inwardintrovert

Word Origin for intro-

from Latin intrō towards the inside, inwardly, within

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

Word Origin and History for intro-


word-forming element, from Latin intro "on the inside, within, to the inside," from PIE *en-t(e)ro-, suffixed form of preposition *en "in" (see in).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for intro-



In; into:intromission.

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