Define Normal

• Main Entry: ¹nor·mal
• Pronunciation: \ˈnȯr-məl\
• Function: adjective
• Etymology: Latin normalis, from norma
• Date: circa 1696

1 : perpendicular; especially : perpendicular to a tangent at a point of tangency
2 a : according with, constituting, or not deviating from a norm, rule, or principle b : conforming to a type, standard, or regular pattern
3 : occurring naturally <normal immunity>
4 a : of, relating to, or characterized by average intelligence or development b : free from mental disorder :sane
5 a of a solution : having a concentration of one gram equivalent of solute per liter b : containing neither basic hydroxyl nor acid hydrogen <normal silver phosphate> c : not associated <normal molecules> d :having a straight-chain structure <normal butyl alcohol>
6 of a subgroup : having the property that every coset produced by operating on the left by a given element is equal to the coset produced by operating on the right by the same element
7 : relating to, involving, or being a normal curve or normal distribution <normal approximation to the binomial distribution>
8 of a matrix : having the property of commutativity under multiplication by the transpose of the matrix each of whose elements is a conjugate complex number with respect to the corresponding element of the given matrix