1. the first occurrence of menstruation in a female, typically occurring during puberty
Usage: medical

Examples

• The average age of menarche in the United States is around 12 to 13 years old.
• Her mother prepared her for menarche by explaining the changes her body would experience.
• The health class discussed menarche as a normal part of female development.
• Cultural attitudes toward menarche vary significantly around the world.
• The doctor explained that menarche marks the beginning of a girl’s reproductive years.
• Early menarche can sometimes be linked to nutritional and environmental factors.