a. [f. prec. + -AL.] Of or pertaining to combination.
1681. Blount, Glossogr., Combinational Churches, are the Independent Churches, by some so stiled.
b. Mus. in Combinational tone, a note produced by the combined sounding of two other notes, a resultant tone.
1879. E. J. Payne, in Grove, Dict. Mus., I. 727/1. No minor chord can be obtained perfectly free from such false combinational tones.
1881. Broadhouse, Mus. Acoustics, 312. Combinational tones are of two kinds differential tones summational tones.