Added 9 October 2026
dyad
/ˈdaɪ.æd/ noun
In Latin: none, coined in 1884 Coined: 1884, by Josiah Willard Gibbs Wiktionary
noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about dyad at Wordnik → Where our words come from →
- A set of two elements treated as one; a pair.
- Two persons in an ongoing relationship; a dyadic relationship.
- The relationship or interaction itself in reference to a couple.
Origin
From Ancient Greek δυάς (duás), δυάδ- (duád-) from δύο (dúo, “two”), from Proto-Indo-European *duwó, *duwéh₃ (*dwóh₁). The mathematics sense was coined by American scientist Josiah Willard Gibbs in 1884 in the second half of his book Elements of Vector Analysis.
From Wiktionary, via Kaikki.org (CC BY-SA)