Topicala
Topicala is a simple, small, meta-search engine, that helps You find the sites you need. Created By Paul Kinlan. Web Hosting by SwitchMedia.
Search [?]  
Dictionary Results For "tetrad" [?]/[OPML]
Ads By Google
Wiktionary Articles [RSS] - [GNU, www.Wiktionary.org]

English

Noun

tetrad

  1. A group of four things.
  2. Chemistry. A tetravalent atom or radical.
  3. Biology. Two pairs of sister chromatids (a dyad pair) aligned in a certain way and often on the equatorial plane during the meiosis process.


Derived terms


io:tetrad ta:tetrad vi:tetrad zh:tetrad

GNU Project's publication of CIDE, the Collaborative International Dictionary of English Tetrad \Tet"rad\, n. [L. tetras, -adis, Gr. ?, ?: cf. F.
t['e]trade.]
1. The number four; a collection of four things; a
quaternion.
[1913 Webster]

2. (Chem.) A tetravalent or quadrivalent atom or radical; as,
carbon is a tetrad.
[1913 Webster] Tetradactyl
WordNet tetrad
n : the cardinal number that is the sum of three and one [syn: four,
4, IV, quatern, quaternion, quaternary, quaternity,
quartet, quadruplet, foursome, Little Joe]
Created By Paul Kinlan. Web Hosting by SwitchMedia.