ὑπερδιαζεύγνυμαι
ὑπερδιαζεύγνυμαι, to be separated by an interval of an octave
ὑπερδια-ζεύγνυμαι,
- to be separated by an interval of an octave, Bacch. Harm. 87: hence ὑπερδιά-ζευξις, εως, ἡ, ibid.