'Biquintile' definitions:

Definition of 'Biquintile'

From: GCIDE

Biquintile \Bi*quin"tile\, 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]