noun a surd is a mathematical term referring to a number that cannot be expressed as a ratio of two integers, such as the square root of a non-square number
noun a quintic equation or function
adjective referring to a mathematical expression or function of the fifth degree
noun BODMAS stands for Brackets, Orders (i.e. powers and square roots, etc.), Division and Multiplication, Addition and Subtraction. It is a rule used to decide the order of operations in mathematics.