noun
- plural of menarche; the first occurrences of menstruation in females, typically during puberty
Usage: medical; biological
Examples
- The study tracked menarches in girls from different geographic regions.
- Researchers found that menarches occurred earlier in urban populations.
- The average age of menarches has decreased over the past century.
- Nutritional factors can influence the timing of menarches.
- The medical team documented menarches as part of their adolescent health study.