premenstruum

premenstruum definition - medical

pre·men·stru·um (prē-mĕnˈstro͞o-əm)

noun
The period just preceding menstruation.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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