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acinus

[as-uh-nuh s]
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noun, plural ac·i·ni [as-uh-nahy] /ˈæs əˌnaɪ/.
  1. Botany. one of the small drupelets or berries of an aggregate, baccate fruit, as the blackberry.
  2. a berry, as a grape or currant.
  3. Anatomy.
    1. a minute rounded lobule.
    2. the smallest secreting portion of a gland.
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Origin of acinus

1725–35; < Latin: grape, berry, seed of a berry
Related formsac·i·nar [as-uh-ner, -nahr] /ˈæs ə nər, -ˌnɑr/, a·cin·ic [uh-sin-ik] /əˈsɪn ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for acini

acinus

noun plural -ni (-ˌnaɪ)
  1. anatomy any of the terminal saclike portions of a compound gland
  2. botany any of the small drupes that make up the fruit of the blackberry, raspberry, etc
  3. botany obsolete a collection of berries, such as a bunch of grapes
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Derived Formsacinic (əˈsɪnɪk), acinous or acinose, adjective

Word Origin

C18: New Latin, from Latin: grape, berry
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

acini in Medicine

acinus

(ăsə-nəs)
n. pl. ac•i•ni (-nī′)
  1. Any of several minute grape-shaped secretory portions of an acinous gland.
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Related formsa•cinic (ə-sĭnĭk) null null adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.