duad

• (Received Pronunciation) IPA^(key): /ˈdjuːæd/
• (General American) IPA^(key): /ˈd(j)uæd/
• Hyphenation: du‧ad

duad (plural duads)

1. A pair or couple.

   Synonyms: dyad, twosome; see also Thesaurus:duo

   • 1876, Richard F[rancis] Burton, “The Minor Tribes and the Mpongwe”, in Two Trips to Gorilla Land and the Cataracts of the Congo. […], part I (The Gaboon River and Gorilla Land), London: Sampson Low, Marston, Low, and Searle, […], →OCLC, page 96:

     [T]hey have invented idols, a manifest advance toward that polytheism and pantheism which lead through a triad and duad of deities to monotheism, the finial of the spiritual edifice.

2. (astrology) Dwadasama.
3. (mathematics) An unordered pair.

• (group) monad, duad/dyad, triad, tetrad, pentad, hexad, hebdomad/heptad, ogdoad/octad, ennead/nonad, decad/decade, hendecad, dodecad/duodecade, chiliad

• Dadu, Duda, daud, udad

• düüdj (Mooring)
• duar (Sylt)

From Proto-Germanic *daudaz.

• (Föhr-Amrum) IPA^(key): [duɐ̯d]

duad

1. (Föhr-Amrum) dead

• duas

duad

1. past participle of dua

• udda