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n. pl. ac·i·ni (-nī′)
One of the small saclike dilations composing a compound gland.

[Latin, berry.]

a·cin′ic (ə-sĭn′ĭk), ac′i·nous adj.


n, pl -ni (-ˌnaɪ)
1. (Anatomy) anatomy any of the terminal saclike portions of a compound gland
2. (Botany) 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
[C18: New Latin, from Latin: grape, berry]
acinic, ˈacinous, ˈacinose adj


(ˈæs ə nəs)

n., pl. -ni (-ˌnaɪ)
1. a small, rounded form, as a lobule, sac, seed, or berry.
2. the smallest secreting portion of a gland.
[1725–35; < Latin: grape, berry, seed of a berry]
ac′i•nar (-nər, -ˌnɑr) a•cin•ic (əˈsɪn ɪk) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.acinus - one of the small drupes making up an aggregate or multiple fruit like a blackberryacinus - one of the small drupes making up an aggregate or multiple fruit like a blackberry
drupelet - a small part of an aggregate fruit that resembles a drupe
2.acinus - one of the small sacs or saclike dilations in a compound glandacinus - one of the small sacs or saclike dilations in a compound gland
gland, secreter, secretor, secretory organ - any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream
sac - a structure resembling a bag in an animal
References in periodicals archive ?
Acini are expanded by cells with vacuolated cytoplasm and marked nuclear pleomorphism, features of apocrine ductal carcinoma in situ (hematoxylin-eosin, original magnification X40).
Primordial acini appear as cluster of cells in fibromuscular stroma (Fig: 3).
Levels of ROS produced by cerulein-stimulated pancreatic acini cells were higher than those observed with unstimulated pancreatic acini.
Instrumentul used to guarantee payment of participation will be presented at the original acini later date and time set for opening bids.
The volume densities of exocrine acini (VvA), islets of Langerhans (VvL), excretory ducts (VvD) and interlobar spaces (septae) (VvS) were determined in the pancreas.
Each lobule has a single duct whose branches begin as acini or "end-pieces".
The animals showed a marked degree of hyperplasia with mitotic figure in the cells of stratum granulosum of epidermis and fibrocytes of the dermis, extensive anaplasia and malignant changes in acini and ducts of the mammary gland.
Histopathology of Vermiform appendix showed a tumor at the tip of the appendix with clear margins of 6mm, composed of small glandular acini and individual cells with eosinophilic and focally granular cytoplasm occupying the submucosa (Figure-1 and 2).
The parotid gland is composed almost exclusively of serous-type acini, and it is the most common site of AcCC (~80% of cases); other reported sites are the pal ate (up to 15%), submandibular gland (4%), and sublingual gland (1%).
The study shows that acini (AS-ih-nye), the small milk-producing elements in breast lobules, can be counted in sample biopsies.