ˈ ̷ ̷ˌ ̷ ̷ noun
1. : a point at or approximately at the center of an area or midway between the extremities of a line
2.
a. : the point of time midway between the extremities of a period of time or of an event, process, or condition continuing over a given period of time
b. : a point of time assumed to be midway or approximately midway between the beginning and the probable time of termination of an event, process, or condition whose end lies at some future and not precisely determinate point of time
3.
a. : a point on a line segment or an arc of a curve whose distances from the end points measured along the segment or arc are equal
b. : the arithmetic mean of the upper and lower limits of a class interval