(physics) in which all parts of an object vibrate at the same frequency (see normal mode)
(rail transport, of points) in the default position, set for the most frequently used route
(geometry) perpendicular to a tangent of a curve or derivative of a surface
(mathematics) adhering to or being what is considered natural or regular in a particular field or context:
(of a real number) whose digits, in any base representation, enjoy a uniform distribution
(algebra, of a subgroup) with cosets which form a group
(algebra, of a field extension of a field K) which is the splitting field of a family of polynomials in K
(probability theory, statistics, of a distribution) which has a very specific bell curve shape; that is or has the qualities of a normal distribution
(probability theory, statistics, of a random variable, etc.) which has a normal distribution; which is associated with random variable that has a normal distribution
(complex analysis, of a family of continuous functions) which is pre-compact
(set theory, of a function from the ordinals to the ordinals) which is strictly monotonically increasing and continuous with respect to the order topology
(linear algebra, of a matrix) which commutes with its conjugate transpose
(functional analysis, of a Hilbert space operator) which commutes with its adjoint
(category theory) being (as a morphism) or containing (as a category) only normal epimorphism(s) or monomorphism(s), that is, those which are the kernel or cokernel of some morphism, respectively
(topology, of a topology) in which disjoint closed sets can be separated by disjoint neighborhoods
Noun
(geometry) a line or vector that is perpendicular to another line, surface, or plane.
(slang, countable) a person who is normal, who fits into mainstream society, as opposed to those who live alternative lifestyles.
