Толковый словарь английского языка Oxford English Reference - median

adj. & n. --adj. situated in the middle. --n. 1 Anat. a median artery, vein, nerve, etc. 2 Geom. a straight line drawn from any vertex of a triangle to the middle of the opposite side. 3 Math. the middle value of a series of values arranged in order of size. Derivatives medianly adv. Etymology: F m{eacute}diane or L medianus (as MEDIAL)