Look up: dyad

1. 
   Dyad
   a social group with two members
   Found on http://wps.pearsoned.co.uk/wps/media/obj
   
   
2. 
   Dyad
   Dyad: The word 'dyad' comes from the Greek 'dyas' meaning the number two. In psychology, a dyad refers to a pair of persons in an interactional situation. For example, a patient and therapist, a woman and her husband, a girl and her stepfather, etc. In chemistry, a dyad is a bivalent element. And in biology, a dyad is a double chromosome resulting ...
   Found on http://www.medterms.com/script/main/art.
   
   
3. 
   Dyad
   Dy'ad noun [ Latin dyas , dyadis , the number two. Greek ...: confer French dyade . See two, and confer Duad .] 1. Two units treated as one; a couple; a pair. 2. (Chemistry) An element, atom, or radical having a valence or combining power of two.
   Found on http://www.encyclo.co.uk/webster/D/134
   
   
4. 
   Dyad
   Dy'ad adjective (Chemistry) Having a valence or combining power of two; capable of being substituted for, combined with, or replaced by, two atoms of hydrogen; as, oxygen and calcium are dyad elements. See Valence .
   Found on http://www.encyclo.co.uk/webster/D/134
   
   
5. 
   dyad
   A pair. Two units. Half of a tetrad (four units). What happens to bivalent (tetrad) chromosomes after the first nuclear division of meiosis. ... (09 Oct 1997) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
6. 
   Dyad
   `Etymology `dyad` may refer to: *Dyad (symbol), according to the Pythagoreans, is the principle of `twoness` or `otherness` *Dyad (biology), a pair of sister chromatids occurring in prophase I of meiosis *dyad (General), consisting of two parts *dyad (Greek philosophy), Greek philosopher's principle of `twoness` or `otherness` *dyad (music), a set of two notes or pitches *dyad (Sociology), mostly refers to parents and friends, occasionally to twi...
   Found on http://en.wikipedia.org/wiki/Dyad
   
   
7. 
   Dyad
   • (a.) Having a valence or combining power of two; capable of being substituted for, combined with, or replaced by, two atoms of hydrogen; as, oxygen and calcium are dyad elements. See Valence. • (n.) Two units treated as one; a couple; a pair. • (n.) An element, atom, or radical having a valence or combining power of two.Dyad: words...
   Found on http://thinkexist.com/dictionary/meaning
   
   
8. 
   dyad
   a unit of quantity equal to 2. This unit is frequently used in cell biology and biotechnology.
   Found on http://www.unc.edu/~rowlett/units/dictD.
   
   
9. 
   Dyad
   (Gr. duas, two) A pair of units considered as one. In Pythagoreanism the dyad is the number two, thought of as a substantial essence, or physically, as a line, i.e. two points which do not coincide. -- V.J.B.
   Found on http://www.ditext.com/runes/d.html