Medical Term:

tetrad

Pronunciation: tet′rad

Definition:

  1. A collection of four things having something in common, such as a deformity with four features, Fallot tetralogy.
  2. In chemistry, a quadrivalent element.
  3. In heredity, a bivalent chromosome that divides into four chromatids during meiosis.

Synonym(s): tetralogy

[G. tetras (tetrad-), the number four]

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