Definitions

1. noun

A person or animal that secretes a particular substance, especially one that secretes milk or other nutrients.

“The mammary glands are the secretors of milk in mammals.”

2. noun

A person who divulges secrets or confidential information.

“The journalist was a secretor of sensitive government data.”

3. noun

In genetics, an individual who secretes a particular antigen in their body fluids.

“Only 20% of the population are secretors of the ABO blood group antigens.”