from The American Heritage® Dictionary of the English Language, 4th Edition

  • In; into: introjection.
  • Inward: introvert.

from the GNU version of the Collaborative International Dictionary of English

  • A prefix signifying within, into, in, inward.

from The Century Dictionary and Cyclopedia

  • A Latin adverb used as a prefix, signifying ‘within, into, in.’
  • An abbreviation of introduction.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. formally making a person known to another or to the public
  • n. a brief introductory passage to a piece of popular music


Latin intrō-, from intrō, to the inside; see en in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)



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