Amenorrhoea
/eɪˌmenəˈriːə/
Definition 1 of 1
Pro Tip 1/3Gender Specific
Amenorrhoea is used exclusively for females because it refers to the absence of menstrual cycles. 
The gynecologist explained that amenorrhoea is a condition that only affects women.
Pro Tip 2/3Medical Condition
Understand amenorrhoea as a medical condition, which may indicate health issues, not just a missed period. 
Her amenorrhoea was actually signaling an underlying thyroid problem.
Pro Tip 3/3Primary vs Secondary
Distinguish between primary amenorrhoea (never having periods) and secondary (periods stopping). 
She was diagnosed with primary amenorrhoea because she never started menstruating.