tet·rad /ˈtɛˌtræd/
四個,四個一組,四分染色體
tet·rad /ˈtɛˌtræd/ 名詞
四分體,四裂體,四聯症,四價元素,四分孢子,四聯體,四聯球菌,四合花粉
tetrad
四元群
Tet·rad n.
1. The number four; a collection of four things; a quaternion.
2. Chem. A tetravalent or quadrivalent atom or radical; as, carbon is a tetrad.
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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]