noun
- a hormone produced mainly in the ovaries that regulates female reproductive functions and secondary sexual characteristics
Usage: biology; medicine
Examples
- Estrogen levels fluctuate during the menstrual cycle.
- The doctor prescribed estrogen therapy for menopause symptoms.
- Birth control pills contain synthetic estrogen.
- Estrogen helps maintain bone density in women.
- During pregnancy, estrogen production increases significantly.
- Some plants contain compounds that mimic estrogen in the body.