a. Obs. rare1. [f. Gr. ἀν priv. + αἰτιολογία cause assigned + -ICAL. The reg. form would be anætiological.] (See quot.)
1652. Gaule, Magastrom., 81. Astrologicall [predictions]
being (as is their own word) anaitiologicall, or not having any naturall cause at all.