histiocytoma

[hĭs′tē-ō-sī-tōmə]

n. pl. his•ti•o•cy•to•mas

A tumor composed of histiocytes.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.