[ ter-uh-toh-muh ]
/ ˌtɛr əˈtoʊ mə /

noun, plural ter·a·to·mas, ter·a·to·ma·ta [ter-uh-toh-muh-tuh] /ˌtɛr əˈtoʊ mə tə/. Pathology.

a tumor made up of different types of tissue.

Origin of teratoma

First recorded in 1885–90; terat- + -oma
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for teratoma


/ (ˌtɛrəˈtəʊmə) /

noun plural -mata (-mətə) or -mas

a tumour or group of tumours composed of tissue foreign to the site of growth
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 teratoma


[ tĕr′ə-tōmə ]

n. pl. ter•a•to•mas

A tumor consisting of different types of tissue, as of skin, hair, and muscle, caused by the development of independent germ cells.teratoblastoma teratoid tumor

Related forms

ter′a•toma•tous (-tōmə-təs) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.