tetrad

noun tet·rad \ ˈte-ˌtrad \

Definition of tetrad

: a group or arrangement of four: such as
a : a group of four cells produced by the successive divisions of a mother cell
  • a tetrad of spores
b : a group of four synapsed chromatids that become visibly evident in the pachytene stage of meiotic prophase

tetradic

play \te-ˈtra-dik\ adjective

Recent Examples of tetrad from the Web

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Origin and Etymology of tetrad

Greek tetrad-, tetras, from tetra-


Medical Dictionary

tetrad

noun tet·rad \ ˈte-ˌtrad \

medical Definition of tetrad

: a group or arrangement of four: as
a : a tetravalent element, atom, or radical
b : a group of four cells arranged usually in the form of a tetrahedron and produced by the successive divisions of a mother cell
  • a tetrad of spores
c : a group of four synapsed chromatids that become visibly evident in the pachytene stage of meiotic prophase and are produced by the longitudinal splitting of each of two paired homologous chromosomes

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