hemohistioblast

[hē′mō-hĭstē-ə-blăst′]
n.
  1. A primitive mesenchymal cell believed to be capable of developing into a histiocyte or into any of the various types of blood cells, including monocytes.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.