Definition of acinus in English:

acinus

Line breaks: aci¦nus
Pronunciation: /ˈasɪnəs
 
/

noun (plural acini /-nʌɪ/)

Anatomy
  • 1A small sac-like cavity in a gland, surrounded by secretory cells.
    More example sentences
    • The mass also contained cystic spaces lined by columnar epithelium, sebaceous glands, cartilage, smooth muscle, and pancreatic acini.
    • Small residual ducts and islands of intact salivary gland acini predominantly composed of serous-type glandular epithelium were present.
    • The airway wall is composed of many interrelated structural components such as epithelium, connective tissue, vessels, muscle, and mucus-secreting gland acini.
  • 2A region of the lung supplied with air from one of the terminal bronchioles.
    More example sentences
    • Primary bronchiolar disorders are separated from diseases primarily affecting more distal components of the pulmonary acinus and large airway diseases in which prominent secondary bronchiolar changes may be seen.
    • A spectrum of airborne organic particulate matter, appropriately sized to reach pulmonary acini, produces this disease.
    • Emphysema is classified into three subtypes based on the portion of the acinus that is involved.

Derivatives

acinar

adjective
More example sentences
  • However, the extent to which such results are applicable to acinar cells is not clear.
  • The granulomatous process exclusively affected the small airways in an acinar distribution.
  • What collagen is present is usually found associated with the acinar pattern.

Origin

mid 18th century: Latin, literally 'a kernel'.

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