Dictionary.com
definitions

teratism

[ter-uh-tiz-uh m]
noun
  1. love or worship of the monstrous.
  2. Biology. a monstrosity.

Origin of teratism

First recorded in 1900–05; terat- + -ism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for teratism

teratism

noun
  1. a malformed animal or human, esp in the fetal stage; monster
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
teratism in Medicine

teratism

[tĕr′ə-tĭz′əm]
n.
  1. A congenital malformation or monster.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.