| The duad has been generated from the monad, according to Pythagoras. |
| The figures of the duad are the Son, who is the splendor of the Father, and the Word, which is the form of thought. |
| The bomb exploded in a busy area in Lashkargah, the capital of volatile Helmand Province, said provincial government spokesman Duad Ahmad. |
| Whether the root be a perfect monosyllable, or a duad, or even triad, formed on the monosyllable, it is the same thing with respect to the origin of the root. |
| The duad, with the Monad brooding behind it, is the fundamental principle of the Avesta. |
| 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. |
