tetrad
Plural: tetrads
Noun
- A group or set of four.
- the cardinal number that is the sum of three and one
- A group of four things.
- Two pairs of sister chromatids (a dyad pair) aligned in a certain way and often on the equatorial plane during the meiosis process.
- A group of four haploid and immature pollen grains in tetrahedral fashion produced by meiotic microsporogenesis.
- A unit of land area of two by two (that is, four) square kilometres.
- A tetravalent atom or radical.
- A group of four basis vectors for a four-dimensional manifold in differential geometry.
- A chord comprised of four notes; a tetrachord.
Examples
- His rack held a perfect tetrad of vowels, challenging him to find a word.
Origin / Etymology
From Ancient Greek τετράς (tetrás), analysable as tetra- + -ad.
Synonyms
4, four, foursome, IV, Little Joe, quadruplet, quartet, quatern, quaternary, quaternion, quaternity, quadrad, quadruplicity, tetrad, tetraplet
Scrabble Score: 7
tetrad: valid Scrabble (US) TWL Wordtetrad: valid Scrabble Word in Merriam-Webster MW Dictionary
tetrad: valid Scrabble Word in International Collins CSW Dictionary