freemartin
Definition
Noun: A freemartin is a female calf that is born as a twin to a male calf and is typically infertile due to exposure to male hormones in the womb.
Usage Examples
- (The infertile female calf was diagnosed.)
- (The condition occurs in mixed-sex twin births.)
Advanced Usage
"Freemartin effect": The phenomenon where a female twin is masculinized and rendered sterile due to placental fusion with a male twin.
- The freemartin effect is a well-known example of hormone transfer in utero. (The process of sterility induction.)
"Freemartin heifer": A female calf specifically diagnosed as a freemartin.
- A freemartin heifer will never produce milk or calves. (An infertile female bovine.)
Variants and Related Words
- Freemartinism (noun): The condition of being a freemartin.
- Freemartinism is caused by the exchange of blood and hormones between twin fetuses. (The state of sterility in female twins.)
Synonyms
- Infertile heifer: A female calf that cannot reproduce.
- Sterile female: A female animal unable to conceive.
Related Idioms
- "Born a freemartin": Used to describe a female calf doomed to infertility from birth.
- That cow was born a freemartin, so she will never calve. (The infertility was determined at birth.)