clear cell

[klîr]
n.
  1. A cell, especially a neoplastic one, containing abundant glycogen or other material that is not stained by hematoxylin or eosin, so that the cytoplasm appears clear histologically.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.