'Teratoma' definitions:

Definition of 'teratoma'

(from WordNet)
noun
A tumor consisting of a mixture of tissues not normally found at that site

Definition of 'Teratoma'

From: GCIDE
  • Teratoma \Ter`a*to"ma\, n. [NL., fr. Gr. ?, ?, monster + -oma.] (Med.) A tumor, sometimes found in newborn children, which is made up of a heterigenous mixture of tissues, as of bone, cartilage and muscle. [1913 Webster]