Meaning of DYAD in English

DYAD

I. noun

also di·ad ˈdīˌad, -īəd

( -s )

Etymology: Late Latin dyad-, dyas two (n.), from Greek, from dyo two — more at two

1. : two units treated as one : couple , pair ; specifically : a pair of individuals (as husband and wife, teacher and pupil) maintaining a sociologically significant relationship

2. : a bivalent element, atom, or radical

3. : a meiotic chromosome after separation of the two homologous members of a tetrad

4. mathematics : an operator indicated by writing the symbols of two vectors without a dot or cross between (as AB)

II.

variant of diad

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.