quadral /ˈkwɒdɹəl/noun 4adjective 2forms 1 noun4 •A grammatical number referring to four (or more) things.Likewise, expression of quadral is accomplished in the same way by establishing specific locations or points in signing space. — 2003 •A foursome. •(rhetoric) A set of four phrases, separated by pauses when speaking or commas when writing.The first instinctive step in revising written matter looks to an effecting of quadrals; any later revision aims at a perfecting of the rhythma. — 1925 •A set of points with all the combinatorial properties of a quadric (a quadric being the set of points of PG(n, q) whose coordinates satisfy a quadratic equation)."A polynomial P(x₁, ..., xₙ is called quadral if it splits into a product of quadratic (or linear) functions in the complex field of coefficients." — 1952 adjective2 •Referring to four (or more) things; of, in or relating to the quadral grammatical number.[…] in Konomala, Patpatar, Tolai, Kandas, Duke of York and Siar of New Ireland, these quadral forms have replaced the original plurals. — 1988 •Of or relating to quadral polynomials. formsquadrals