Astrol. Also 7– -il(l. [f. L. quint-us fifth + -ILE, after quartile.] Quintile (aspect): A planetary aspect, introduced by Kepler, in which the planets are one-fifth of a circle, or 72 degrees, distant from each other.
c. 1610. Sir C. Heydon, Astrol. Disc. (1650), 95. In these our days our late Artists … have added unto these former Aspects three others, viz. the Quintile [etc.].
1647. Lilly, Chr. Astrol., iii. 32. A Quintill consists of two Signes twelve degrees.
1686. Goad, Celest. Bodies, I. ii. 39. This Notable Effect may be accounted for without these Quintiles.
