Obs. rare. [ad. Gr. σπονδεισμ-ός, f. σπονδεῖος SPONDEE.] In ancient Greek music: (see quot. 1801).
1603. Holland, Plutarchs Morals, 1252. Unlesse a man having an eie unto a vehement Spondiasme, will conjecture the same to be a kinde of Diatonos.
1801. Busby, Dict. Mus., Spondiasm, an alteration in the harmonic genus by which a chord was elevated three dieses above its ordinary pitch, so that the spondiasm was precisely the opposite of the eclysis.