adjective

• Of, or relating to, algebra.
• (mathematics, of an expression, equation, or function) Containing only numbers, letters, and arithmetic operators.
• (algebra, number theory, of a number) Which is a root of some polynomial whose coefficients are rational.
• (algebra, of a field) Whose every element is a root of some polynomial whose coefficients are rational.
• (chess, of notation) Describing squares by file (referred to in intrinsic order rather than by the piece starting on that file) and rank, both with reference to a fixed point rather than a player-dependent perspective.