oli·go·men·or·rhea
variants:
or chiefly British oligomenorrhoea \
-ˌmen-ə-ˈrē-ə 
\
\
Medical Definition of oligomenorrhea
: abnormally infrequent or scanty menstrual flow
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“Oligomenorrhea.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/oligomenorrhea. Accessed 18 Oct. 2021.
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