noun
- Plural of oestrin; hormones produced by the ovaries that promote female sexual characteristics and regulate the reproductive cycle in mammals.
Usage: chiefly British spelling; American English typically uses 'estrin' or 'estrogens'; technical/medical term; also called estrogens in modern usage
Examples
- The laboratory measured oestrins levels in the blood sample.
- Oestrins play a crucial role in the development of secondary sexual characteristics.
- The study examined how oestrins fluctuate throughout the menstrual cycle.
- Synthetic oestrins are sometimes used in hormone replacement therapy.
- Oestrins and progesterone work together to regulate reproduction in females.