galactorrhea

noun

ga·​lac·​tor·​rhea gə-ˌlak-tə-ˈrē-ə How to pronounce galactorrhea (audio)
: a spontaneous flow of milk from the nipple

Word History

Etymology

borrowed from New Latin, from galacto- galacto- + -rrhoea -rrhea

First Known Use

circa 1860, in the meaning defined above

Time Traveler
The first known use of galactorrhea was circa 1860

Browse Nearby Words

Cite this Entry

“Galactorrhea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/galactorrhea. Accessed 12 Mar. 2025.

Medical Definition

galactorrhea

noun
ga·​lac·​tor·​rhea
variants or chiefly British galactorrhoea
: a spontaneous flow of milk from the nipple

More from Merriam-Webster on galactorrhea

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!