Definition

1. Adjective:
   • Relating to or resembling an acinus: Pertaining to one of the small, sac-like structures, particularly found in certain glands or organs.
   • Having a structure composed of acini: Describing a gland or tissue that is made up of these small, berry-like secretory units.

Usage Examples

• Adjective:
  • The pathologist noted the acinous structure of the salivary gland under the microscope.
  • Pancreatic tissue has a distinct acinous organization for enzyme secretion.

Advanced Usage

• "Acinous gland": A gland, such as the exocrine pancreas or salivary glands, whose secretory cells are arranged in small sacs (acini).
  • The acinous glands are responsible for producing digestive enzymes.
• "Acinous cell": A specific type of cell that makes up part of an acinus.
  • The acinous cells of the pancreas secrete trypsinogen.

Variants and Related Words

• Acinus (n): The singular form; a small, sac-like cluster of cells, often berry-shaped, that constitutes the basic secretory unit of certain glands.
  • Each acinus in the mammary gland produces milk.
• Acinar (adj): A synonym often used interchangeably with "acinous" to describe structures related to or composed of acini.
  • The acinar pattern is characteristic of healthy exocrine pancreatic tissue.
• Acinic (adj): Another adjective form with the same meaning.
  • The biopsy showed normal acinic architecture.

Synonyms

• Acinar: Pertaining to an acinus.
• Follicular: Pertaining to a small sac or glandular structure (though "follicular" is more specific to thyroid, ovarian, or hair follicles, the structural concept is similar).
• Saccular: Having the form of a small sac or pouch.

Notes on Meaning

• The term is highly specialized and used primarily in anatomy, histology, and pathology. It describes a specific microscopic morphological pattern.
• It is distinct from tubular or alveolar structures, which refer to different shapes of secretory units (tube-like or larger sac-like, respectively).

Adjective

1. pertaining to one of the small sacs (as in a compound gland)