The Collaborative International Dictionary
Disjunct tetrachords
Disjunct \Dis*junct"\ (d[i^]s*j[u^][ng]kt"), a. [L. disjunctus, p. p. of disjungere to disjoin. See Disjoin, and cf. Disjoint.]
Disjoined; separated. [R.]
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(Zo["o]l.) Having the head, thorax, and abdomen separated by a deep constriction.
Disjunct tetrachords (Mus.), tetrachords so disposed to each other that the gravest note of the upper is one note higher than the acutest note of the other.