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tetrad

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noun tet·rad \ˈte-ˌtrad\

Definition of tetrad

  1. :  a group or arrangement of four: asa :  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


Origin and Etymology of tetrad

Greek tetrad-, tetras, from tetra-


First Known Use: 1653


Medical Dictionary

tetrad

play
noun tet·rad \ˈte-ˌtrad\

Medical Definition of tetrad

  1. :  a group or arrangement of four: asa:  a tetravalent element, atom, or radicalb:  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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