the world > life > biology > physical aspects or shapes > physical arrangement or condition > [adjective] > within wall or partition (4)
Situated between septa or partitions. (Chiefly Anatomy and Zoology.)
Anatomy, Pathology, and Biology. Situated within the substance of the wall of a hollow organ, or of a cell.
Anatomy. ‘Situated in the substance of the walls of an organ’ (New Sydenham Soc. Lexicon).
Situated within a septum or partition; said esp. of the chambers enclosed by each pair of mesenteries in Anthozoa.