tetrad
IPA: tˈɛtræd
noun
- A group of four things.
- (biology) Two pairs of sister chromatids (a dyad pair) aligned in a certain way and often on the equatorial plane during the meiosis process.
- (biology) A group of four haploid and immature pollen grains in tetrahedral fashion produced by meiotic microsporogenesis.
- (cartography) A unit of land area of two by two (that is, four) square kilometres.
- (chemistry) A tetravalent atom or radical.
- (mathematics) A group of four basis vectors for a four-dimensional manifold in differential geometry.
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Examples of "tetrad" in Sentences
- B is the curved part of the tetrad.
- A bivalent is sometimes referred to as a tetrad.
- A 'bivalent' is sometimes referred to as a tetrad.
- It's very cumbersome to put in the tetrad indices.
- The mathematical way to describe such an assignment is a tetrad.
- I would prefer to use 'tetrad field' instead of 'tetrad' in the article.
- The first four are called the Tetrad and the eight are called the Ogdoad.
- Four pillars there are, the sign of the sacred tetrad of the ancient covenants.
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