sacculære

Sacculaire is an adjective used mainly in biology, medicine, and related sciences to describe something that resembles, contains, or forms a sac or pouch. The term derives from the Latin saccus meaning sack and the adjectival suffix -arius/-aire, giving English equivalents such as saccular or sacculate. The related nouns sacculus (a small sac) and saccule (a small pouch, notably in anatomy) are common in anatomical terminology.

In anatomy and pathology, sacculaire describes structures with sac-like geometry or cavities. A well-known usage is in reference to a saccular aneurysm, a localized, pouch-shaped bulge in a blood vessel that contrasts with fusiform dilations. The term also applies to normal anatomical features that include a distinct sac, such as the saccule of the inner ear, a part of the vestibular system involved in balance.

In other biological contexts, sacculaire may appear in descriptive morphology to indicate sac-shaped features of tissues, glands, ducts, or organs. In zoological, botanical, and paleontological descriptions, the term can be used to denote sac-like cavities or structures observed in specimens or fossils.

See also: saccule, sacculus, aneurysm, saccular.