n. [ Pref. bi- + quintile: cf. F. biquintile. ] (Astron.) An aspect of the planets when they are distant from each other by twice the fifth part of a great circle -- that is, twice 72 degrees. [ 1913 Webster ]

n. [ F. quintil aspect, fr. L. quintus the fifth. ] (Astron.) The aspect of planets when separated the fifth part of the zodiac, or 72°. Hutton. [ 1913 Webster ]

n. (Astrol.) An aspect of the planets when distant from each other half of the quintile, or thirty-six degrees. [ 1913 Webster ]