noun
- A female sex hormone produced mainly by the ovaries; estrogen.
Usage: Also spelled 'oestrin' in British English.; Technical/medical term; often used interchangeably with 'estrogen' in modern usage.
Examples
- Estrin levels fluctuate throughout the menstrual cycle.
- The doctor explained that estrin is essential for reproductive health.
- Research on estrin has advanced our understanding of hormone regulation.
- Estrin production decreases significantly during menopause.