an·​nex·​in ə-ˈnek-sən How to pronounce annexin (audio)
plural annexins
: any of a family of proteins found in eukaryotes (such as mammals, birds, and plants) that bind to phospholipids in the presence of calcium
often followed by a number usually expressed in Roman numerals to indicate type
Annexin V may play significant roles in cell physiology, including such processes as control of membrane permeability to calcium …William H. Strauss et al., Lancet, 15 July 2001

Word History


blend of annex entry 1 and synexin, earlier name for an adrenal medullary protein with the properties of annexin

First Known Use

1987, in the meaning defined above

Time Traveler
The first known use of annexin was in 1987

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Dictionary Entries Near annexin

Cite this Entry

“Annexin.” Dictionary, Merriam-Webster, Accessed 24 May. 2024.

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