1. tetrad

noun. the cardinal number that is the sum of three and one.


  • digit
  • quaternity
  • quadruplet
  • IV
  • 4
  • figure
  • quatern
  • quartet
  • quaternary
  • Little Joe
  • four
  • foursome


  • divide
  • multiply
  • integrate
  • differentiate

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Sentences with tetrad

1. Adjective
Bacteria are arranged in patterns, the most common of which are diplo, staphylo, strepto, tetrad and sarcina; these arrangements can be applied to the various bacterial shapes.

2. Noun, singular or mass
Random in this sense means that there is an equal chance that the mother-derived chromatids in a tetrad will line up on either side of the division line.