a. [f. L. affīnis a relative + -AL 1, as if ad. L. *affīnālis; cf. fīnālis.]
† 1. Music. (See quot.) Obs.
1609. J. Douland, Ornithop. Microl., 27. Of the Affinall Keyes of Tones. The Keyes (which we call Affinall) be the Letters which end irregular Songs … viz alamire wherein ends euery song of the First and Second transposed Tone. Ibid. Let euery transposition be from a Finall to a fift the proper Affinall.
2. Related by marriage; derived from the same stock or source.
1846. Grove, Contrib. to Sc., 327. That chemical and physical attraction are affinal, or produced by the same mode of force.
1882. A. Macfarlane, Consanguinity, 5. As this group embraces the relationships by affinity, it may be denoted by affinal.
