ependymoma

Medical Dictionary

ependymoma ep·en·dy·mo·ma (ĭ-pěn'də-mō'mə)
n. pl. ep·en·dy·mo·mas or ep·en·dy·mo·ma·ta (-mə-tə)
A central nervous system neoplasm made up of relatively undifferentiated ependymal cells. Also called medulloepithelioma.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Ependymoma is always a great word to know.
So is ninnyhammer. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a fool or simpleton; ninny.
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