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[ter-uh-tol-uh-jee] /ˌtɛr əˈtɒl ə dʒi/
noun, Biology.
the science or study of monstrosities or abnormal formations in organisms.
Origin of teratology
First recorded in 1670-80; terato- + -logy
Related forms
[ter-uh-tl-oj-i-kuh l] /ˌtɛr ə tlˈɒdʒ ɪ kəl/ (Show IPA),
teratologist, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for teratology
Historical Examples
  • Discredit has been cast on teratology because it has been incautiously used.

    Vegetable Teratology

    Maxwell T. Masters
  • Be this as it may, teratology owes a very large number of its records to this class of observers.

    Vegetable Teratology

    Maxwell T. Masters
  • This mode of union belongs, perhaps, rather to the domain of pathology than of teratology.

    Vegetable Teratology

    Maxwell T. Masters
  • In any case this formation in question generally belongs more to general morphology than to teratology.

    Vegetable Teratology

    Maxwell T. Masters
  • teratology shows that ovules may be formed indifferently on leaf-organs or on stem-organs.

    Vegetable Teratology

    Maxwell T. Masters
  • The discussion of this matter, however, pertains rather to normal morphology than to teratology.

    Vegetable Teratology

    Maxwell T. Masters
  • teratology, the branch of biology which treats of malformations or departures from the normal type.

    The Nuttall Encyclopaedia Edited by Rev. James Wood
  • teratology ( , a monster) is a part of biology that treats of deviation from a normal development in man and the lower animals.

  • One may say, then, that a being possessing both arms and wings is a monster and belongs to the department of teratology.

    The Revolt of the Angels Anatole France
  • Ter′atoid, monstrous; Teratolog′ic, -al, pertaining to teratology.

British Dictionary definitions for teratology


the branch of medical science concerned with the development of physical abnormalities during the fetal or early embryonic stage
the branch of biology that is concerned with the structure, development, etc, of monsters
a collection of tales about mythical or fantastic creatures, monsters, etc
Derived Forms
teratologic (ˌtɛrətəˈlɒdʒɪk), teratological, adjective
teratologist, noun
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
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Word Origin and History for teratology

"study of marvels and monsters," 1670s, from comb. form of Greek teras (genitive teratos) "marvel, monster" + -logy.

Online Etymology Dictionary, © 2010 Douglas Harper
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teratology in Medicine

teratology ter·a·tol·o·gy (těr'ə-tŏl'ə-jē)
The biological study of malformations and monstrosities.

ter'a·to·log'ic (-tl-ŏj'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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teratology in Science
The scientific study of birth defects.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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