a. Obs. rare1. [f. Gr. ἀν priv. + αἰτιολογία cause assigned + -ICAL. The reg. form would be anætiological.] (See quot.)

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1652.  Gaule, Magastrom., 81. Astrologicall [predictions] … being (as is their own word) anaitiologicall, or not having any naturall cause at all.

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