tetrad

nounA2

Định nghĩa theo từ loại

Danh từ

noun

Plural noun:

tetrads

1.
A group of four things.
Đồng nghĩa: foursome, quartet, foursome, quadruplet, quadruplicity, quadrad, quaternion, quaternity, quartet, tetrad, tetraplet
2.
(biology) Two pairs of sister chromatids (a dyad pair) aligned in a certain way and often on the equatorial plane during the meiosis process.
3.
(biology) A group of four haploid and immature pollen grains in tetrahedral fashion produced by meiotic microsporogenesis.
4.
(cartography) A unit of land area of two by two (that is, four) square kilometres.
5.
(chemistry) A tetravalent atom or radical.
6.
(mathematics) A group of four basis vectors for a four-dimensional manifold in differential geometry.
7.
(music) A chord comprised of four notes; a tetrachord.

Từ liên quan

Đồng nghĩa

foursomequartet quadruplet quadruplicityquadradquaternion quaternitytetraplet

Cùng gốc / liên quan

bitetradintratetradTetraditetetrad of Fallottetradic

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Nguồn gốc từ

From Ancient Greek τετράς, analysable as tetra ad.