tridermoma

tri·phyl·lo·ma·tous ter·a·to·ma

a teratoma composed of tissues derived from all three germ layers.
Synonym(s): tridermoma
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tridermoma

(trī″dĕr-mō′mă) [″ + ″ + oma, tumor]
A teratoid growth containing all three germ layers.
Medical Dictionary, © 2009 Farlex and Partners