a. Astrol. Obs. [ad. med. or mod.L. quindecīlis, f. quindecim fifteen: cf. quartile, quintile, etc.] Of a planetary aspect: Containing one-fifteenth of a circle, or 24°.
1674. Jeake, Arith. (1696), 10. Astronomicks Aspects Quindecilis, Quindecil.
1686. Goad, Celest. Bodies, I. ii. 39. Then the Vigintile, and Quindecile, and Decile, &c. will also look to be counted; while we hope we shall never be forced to own such Driblets of Aspects.