[n., adj. in-truh-vurt; v. in-truh-vurt]
a shy person.
Psychology. a person characterized by concern primarily with his or her own thoughts and feelings (opposed to extrovert ).
Zoology. a part that is or can be introverted.
Psychology. marked by introversion.
verb (used with object)
to turn inward: to introvert one's anger.
Psychology. to direct (the mind, one's interest, etc.) partly to things within the self.
Anatomy, Zoology. to turn (a hollow, cylindrical structure) in on itself; invaginate.

1660–70; intro- + (in)vert

nonintroverted, adjective
nonintrovertedly, adverb
nonintrovertedness, noun
unintroverted, adjective

extrovert, introvert. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
1.  psychol a person prone to introversion
2.  Also: introverted characterized by introversion
3.  (tr) pathol to turn (a hollow organ or part) inside out
[C17: see intro-, invert]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1654 (implied in introversion), from L. intro- "inward" + vertere "to turn" (see versus). Introverted (adj.) is from 1781. The noun (opposed to extrovert) is 1918, from Ger. psychology, introduced there by C.G. Jung (1875-1961).

1781, pp. adj. from introvert.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

introvert in·tro·vert (ĭn'trə-vûrt', ĭn'trə-vûrt')
v. in·tro·vert·ed, in·tro·vert·ing, in·tro·verts

  1. To turn or direct inward.

  2. To concentrate one's interests upon oneself.

  3. To turn a tubular organ or part inward upon itself.

n. (ĭn'trə-vûrt')
  1. One whose thoughts and feelings are directed toward oneself.

  2. An anatomical structure that is capable of being introverted.

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
Cultural Dictionary
introvert [(in-truh-vurt)]

A term introduced by the psychologist Carl Jung to describe a person whose motives and actions are directed inward. Introverts tend to be preoccupied with their own thoughts and feelings and minimize their contact with other people. (Compare extrovert.)

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
Kids who are more introverted and shy may feel anxious about being out of their element.
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