| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024dy•ad (dī′ad),USA pronunciation n. - a group of two;
couple;
pair. - Biochemistry, Cell 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.
- Chemistryan element, atom, or group having a valence of two. Cf. monad, triad (def. 2a).
- Mathematicstwo vectors with no symbol connecting them, usually considered as an operator.
- Sociology
- two persons involved in an ongoing relationship or interaction.
- the relationship or interaction itself.
adj. - of two parts;
dyadic.
- Greek dyad- (stem of dyás) pair, equivalent. to dý(o) two + -ad- -ad1
- 1665–75
Collins Concise English Dictionary © HarperCollins Publishers:: dyad /ˈdaɪæd/ n - an operator that is the unspecified product of two vectors. It can operate on a vector to produce either a scalar or vector product
- an atom or group that has a valency of two
- a group of two; couple
Etymology: 17th Century: from Late Latin dyas, from Greek duas two, a pair |