Definition of "dyad" in Anglais

noun

1. A set of two elements treated as one; a pair.

2. (sociology) Two persons in an ongoing relationship; a dyadic relationship.

3. (sociology) The relationship or interaction itself in reference to a couple.

4. (music) Any set of two different pitch classes.

5. (chemistry) An element, atom, or radical having a valence of or combining power of two.

6. (biology) A chromosome structure, usually X- or V-shaped, consisting of two condensed sister chromatids joined by a centromere.

7. (biology) A secondary unit of organisation consisting of an aggregate of monads.

8. (mathematics) A tensor of order two and rank one.