alpha cell

n.
  1. Cells situated on the periphery of the islets of Langerhans.
  2. Cells containing acidophil granules in the anterior lobe of the pituitary gland.A cell
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.