ac·​i·​nus | \ ˈa-sə-nəs How to pronounce acinus (audio) \
plural acini\ ˈa-​sə-​ˌnī How to pronounce acinus (audio) \

Definition of acinus

: any of the small sacs terminating the ducts of some exocrine glands and lined with secretory cells

Other Words from acinus

acinous \ ˈa-​sə-​nəs How to pronounce acinus (audio) \ adjective

First Known Use of acinus

circa 1751, in the meaning defined above

History and Etymology for acinus

borrowed from New Latin (in the phrase glandulosi acini,) literally, "glandular berries," used by Marcello malpighi, going back to Latin, "berry, grape, berry or grape seed," probably of pre-Latin substratal origin

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The first known use of acinus was circa 1751

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Cite this Entry

“Acinus.” Dictionary, Merriam-Webster, Accessed 2 Mar. 2021.

Style: MLA
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More Definitions for acinus


aci·​nus | \ ˈas-ə-nəs How to pronounce acinus (audio) , ə-ˈsī- How to pronounce acinus (audio) \
plural acini\ -​ˌnī How to pronounce acinus (audio) \

Medical Definition of acinus

: any of the small sacs or alveoli that terminate the ducts of some exocrine glands and are lined with secretory cells

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