freemartin

[ free-mahr-tn ]
/ ˈfriˌmɑr tn /

noun

a female calf that is born as a twin with a male and is sterile as a result of exposure to masculinizing hormones produced by the male.

Origin of freemartin

First recorded in 1675–85; origin uncertain

British Dictionary definitions for freemartin

freemartin
/ (ˈfriːˌmɑːtɪn) /

noun

the female of a pair of twin calves of unlike sex that is imperfectly developed and sterile, probably due to the influence of the male hormones of its twin during development in the uterus

Word Origin for freemartin

C17: of uncertain origin