<p><strong>Noun</strong></p><ul><li>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.</li><li>Geometry: a straight line from a vertex of a triangle to the midpoint of the opposite side.</li><li>Also called midpoint: a vertical line that divides a histogram into two equal parts.</li></ul><p><strong>Adjective</strong></p><ul><li>Statistics: relating to the value in the center of the distribution for an array of data: the median income of American households.</li><li>noting or relating to a plane dividing something into two equal parts, especially one dividing an animal into right and left halves.</li><li>situated in or relating to the middle; medial.</li></ul>