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Syllabification: pro·lac·tin
Pronunciation: /prōˈlaktən

Definition of prolactin in English:


A hormone released from the anterior pituitary gland that stimulates milk production after childbirth.
Example sentences
  • Hormone assays for serum estrogen, progesterone, prolactin, luteinizing hormone, follicle stimulating hormone and testosterone were performed.
  • The body starts to release a hormone called prolactin, which stimulates the body to produce breast milk.
  • There, hormones called prolactin and oxytocin are released into the bloodstream.


1930s: from pro-2 'before' + lactation.

Definition of prolactin in:

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