n.
The biological study of birth defects.
teratological ter'a·to·log'i·cal (-ə-tl-ŏj'ĭ-kəl) adj.
teratologist ter'a·tol'o·gist n.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
