pregnanedione

[ prĕg′nān-dīōn ]

n.

An unsoluble metabolite of progesterone formed in relatively small quantities and occurring in either of two isomeric configurations: alpha or beta.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.