Mediant
Pronunciation : Me"di*ant
Part of Speech : n.
Etymology : [L. medians, p. p. of mediare to halve: cf. It. mediante, F. m?diante.] (Mus.)
Definition : Defn: The third above the keynote; -- so called because it divides the interval between the tonic and dominant into two thirds.
Source : Webster's Unabridged Dictionary, 1913