Astrol. [f. BI- pref.2 + QUINTILE.] An aspect of the planets, when they are distant from each other twice the fifth part of a great circle,that is, 144 degrees.
1647. Lilly, Chr. Astrol., iii. 32. Kepler hath added some new ones [aspects], as follow A Biquintill Bq consisting of 144 degrees.
1686. Goad, Celest. Bodies, I. ii. 39. The Biquintile will look for some Respect.
1727. in Chambers, Cycl.; and in mod. Dicts.