Definition of "quadral" in English

noun

1. (grammar) A grammatical number referring to four (or more) things.

2. (mathematics) 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).

3. (rhetoric) A set of four phrases, separated by pauses when speaking or commas when writing.

4. A foursome.

adjective

1. (grammar) Referring to four (or more) things; of, in or relating to the quadral grammatical number.

2. (mathematics) Of or relating to quadral polynomials.