Arithmetic, Statistics. the middle number in a given sequence of numbers, taken as the average of the two middle numbers when the sequence has an even number of numbers: 4 is the median of 1, 3, 4, 8, 9.

Geometry. a straight line from a vertex of a triangle to the midpoint of the opposite side.

Also called midpoint. a vertical line that divides a histogram into two equal parts. Compare central tendency.

median strip.

Statistics. relating to the value in the center of the distribution for an array of data: the median income of American households.