medially,adv.|ˈmiːdɪəlɪ| [f. medial a. + -ly2.] In a medial or central position. 1861Macm. Mag. IV. 472/2 A tract..lying medially between the Atlantic and the Mississippi.1883Athenæum 29 Dec. 870/2 The peculiarity being the manner in which the solid part of the web was medially swung.