Tetrad
From BiblePortal Wikipedia
Tetrad [1]
(1):
(n.) The number four; a collection of four things; a quaternion.
(2):
(n.) A tetravalent or quadrivalent atom or radical; as, carbon is a tetrad.
Tetrad [1]
(1):
(n.) The number four; a collection of four things; a quaternion.
(2):
(n.) A tetravalent or quadrivalent atom or radical; as, carbon is a tetrad.