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bursa of Fabricius

Syllabification: (bur·sa of Fa·bri·ci·us)

Pronunciation: /faˈbrēSHəs/

Definition of bursa of Fabricius

noun

Zoology

a glandular sac opening into the cloaca of a bird, producing B cells.

Origin:

mid 19th century (in the Latin form bursa Fabricii): from bursa, and a Latinized form of the name of Girolama Fabrici (1533–1619), Italian anatomist