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Meaning of endothelioma

en•do•the•li•o•ma

Pronunciation: (en"dō-thē"lē-ō'mu), [key]
— pl. -mas, -ma•ta
  1. a tumor originating from the endothelium.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.