Entry from British & World English dictionary
Definition of duad in English:
A pair of people or things.
- Each of the 45 circles is denoted by an unordered pair of duads.
- 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.
- Note that the pairs (0,3) and (4,8) form a duad.
Mid 17th century: from Greek duas, duad- 'two', probably influenced by Latin duo.
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