1. the transitional period in a woman's life leading up to menopause, typically lasting several years, during which hormone levels fluctuate and menstrual cycles become irregular.
Usage: medical/health context; typically occurs in women in their 40s and early 50s

Examples

• Many women experience hot flashes and mood swings during perimenopause.
• Her doctor explained that perimenopause can last anywhere from a few months to ten years.
• During perimenopause, menstrual periods may become heavier, lighter, or more irregular.
• Sleep disturbances are a common symptom of perimenopause.
• She consulted a specialist to manage the symptoms of perimenopause.
• Perimenopause is distinct from menopause itself, which is marked by twelve consecutive months without a period.