The usual, average, or typical state or condition. After the storm, the town slowly returned to normal.
A standard or pattern, especially of social behavior, that is typical or expected. For many families, Sunday dinner together is the normal.
In mathematics and engineering, a line or vector that is perpendicular to a given surface. The normal to the plane points outward from the surface.
(Statistics) A normal distribution. In large samples, the sampling distribution of the mean approaches a normal.