dyad

[ dahy-ad ]
See synonyms for dyad on Thesaurus.com
noun
  1. a group of two; couple; pair.

  2. Biology.

    • a secondary morphological unit, consisting of two monads: a chromosome dyad.

    • the double chromosomes resulting from the separation of the four chromatids of a tetrad.

  1. Chemistry. an element, atom, or group having a valence of two.: Compare monad, triad (def. 2a).

  2. Mathematics. two vectors with no symbol connecting them, usually considered as an operator.

  3. Sociology.

    • two persons involved in an ongoing relationship or interaction.

    • the relationship or interaction itself.

adjective
  1. of two parts; dyadic.

Origin of dyad

1
First recorded in 1665–75; from Greek dyad- (stem of dyás ) “pair,” equivalent to dý(o) “two” + -ad- noun suffix; see origin at two, -ad1
  • Sometimes di·ad .

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use dyad in a sentence

British Dictionary definitions for dyad

dyad

/ (ˈdaɪæd) /


noun
  1. maths an operator that is the unspecified product of two vectors. It can operate on a vector to produce either a scalar or vector product

  2. an atom or group that has a valency of two

  1. a group of two; couple

Origin of dyad

1
C17: from Late Latin dyas, from Greek duas two, a pair

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012