erythroid

[ĕrə-throid′, ĭ-rĭthroid′]
adj.
  1. Having a red color, especially of erythrocytes; reddish.
  2. Of or relating to a red blood cell or one of its developmental precursors.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.