gametoid theory

gam·e·toid theory

(găm′ĭ-toid′)
n.
The theory that the malignancy of a tumor results from neoplastic cells having developed the characteristics of gametes, so that they multiply and grow autonomously as parasites on the host's tissues.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.