[ 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·a·to·log·i·cal [ter-uh-tl-oj-i-kuh l] /ˌtɛr ə tlˈɒdʒ ɪ kəl/, adjectiveter·a·tol·o·gist, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for teratology

British Dictionary definitions for teratology


/ (ˌtɛrəˈtɒlədʒɪ) /


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) or teratological, adjectiveteratologist, 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

Medicine definitions for teratology


[ tĕr′ə-tŏlə-jē ]


The biological study of malformations and monstrosities.

Related forms

ter′a•to•logic (-tl-ŏjĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for teratology


[ tĕr′ə-tŏlə-jē ]

The scientific study of birth defects.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.