I. The causes or materials of disease in the human system, which are extraneous to it: “auferre alienitatem,” Cael. Aur. Tard. 5, 4: “alienitatis obtrusio,” id. ib. 5, 64: “manens alienitas,” id. Acut. 3, 20.—
II. For alienatio (q. v. B.): “mentis,” Cael. Aur. Acut. 2, 39.