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definitions

pregnanedione

[prĕg′nān-dī′ōn]
n.
  1. 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.