premenstruum

noun
pre·​men·​stru·​um | \ -ˈmen(t)-strə-wəm How to pronounce premenstruum (audio) \
plural premenstruums or premenstrua\ -​strə-​wə How to pronounce premenstrua (audio) \

Medical Definition of premenstruum

: the period or physiological state that immediately precedes menstruation

Learn More about premenstruum

Cite this Entry

“Premenstruum.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/premenstruum. Accessed 28 Nov. 2020.

Comments on premenstruum

What made you want to look up premenstruum? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

A Thanksgiving Word Quiz

  • a traditional thanksgiving dinner
  • November comes from a word for which of the following numbers?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!