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pregnanedione

[ prĕg′nān-dīōn ]
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n.
An unsoluble metabolite of progesterone formed in relatively small quantities and occurring in either of two isomeric configurations: alpha or beta.
QUIZ
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Question 1 of 9
Which of the following nouns has an irregular plural form?
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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