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

17 Sep 2019

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Time Traveler for acinus

The first known use of acinus was circa 1751

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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 acini (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

More from Merriam-Webster on acinus Encyclopedia article about acinus

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What made you want to look up acinus? Please tell us where you read or heard it (including the quote, if possible).


to wander slowly or to speak indistinctly

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