- seventh [sev′ənth]adj.[ME seventhe, a new formation < seoven + -th, replacing OE seofande (akin to Ger siebente) & seofotha]1. preceded by six others in a series; 7th2. designating any of the seven equal parts of somethingn.1. the one following the sixth2. any of the seven equal parts of something; 1/ 73. Musica) the seventh tone of an ascending diatonic scale, or a tone six degrees above or below any given tone in such a scale; leading tone; subtonicb) the interval between two such tones, or a combination of themc) the chord formed by any tone and the third, fifth, and seventh of which it is the fundamental: in full seventh chordadv.in the seventh place, rank, group, etc.seventhlyadv.
English World dictionary. V. Neufeldt. 2014.