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Definition of: acinus
(as′ə·nəs) noun plural ·ni (-nī)
1. Bot. One of the drupelets of an aggregate baccate fruit, as a raspberry; also, a grape seed.
2. A berry, as a grape, growing in bunches; a bunch of such berries.
3. Anat. The terminal division of the secreting portion of a racemose gland. [<L, ape]
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