proacrosomal granule

[prō′ăk-rə-sōməl]
n.
  1. One of the small carbohydrate-rich granules appearing in vesicles of the Golgi complex of spermatids and coalescing to form an acrosomal granule.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.