Lewis & Short

causātĭo, ōnis, f. [causa, II. C.] (postclass.).

  1. I. A pretext, an excuse, apology, plea, Cod. Th. 3, 5, 2; Tert. ad Marc. 5, 20: aegri corporis, Gell. 20, 1, 30.
  2. II. A disease: rara, Pall. 1, 4, 1.