Examples from the Web for duad
On the hyper level the triplet becomes a duad and a unit; the duad becomes two units; and the septet a triplet and a quartet.
The pillars are the same as in chlorine and its congeners, with a duad added at the base.
A consists of two square-based pyramids turned so as to meet at their apices, and breaks up into two quartet rings and a duad.
Coming down nearer to our own time, we find a duad of great English poets, usually associated in our minds,—Byron and Scott.Nineteenth Century Questions|James Freeman Clarke
It frankly accepts the Duad as the true explanation of the actual universe.Ten Great Religions|James Freeman Clarke