menopause

Concise Oxford English Dictionary © 2008 Oxford University Press:
menopause /ˈmɛnəpɔːz/

▶noun the ceasing of menstruation or the period in a woman's life (typically between 45 and 50) when this occurs.

– derivatives
menopausal adjective.

– origin C19: from mod. L. menopausis (see meno-, pause).