Characterized by distinctive tones. Same as toned, 2. See tone, 15.Of or relating to tones or musical sounds.Specifically, in music, of or pertaining to, or founded on, the key-note or tonic.Of or pertaining to tension; increasing tension.In medicine, increasing the strength or tone of the animal system; obviating the effects of weakness or debility, and restoring healthy functions; hence, bracing or invigorating to the mental or the moral nature.n. In medicine, any remedy which improves the tone or vigor of the fibers of the stomach and bowels, or of the muscular fibers generally.n. In music, same as key-note. See also key, 7 .