lateralward(s,adv.Anat.|ˈlætərəlwəd, -wədz| [f. lateral a. + -ward, -wards.] Laterally; to or from the mesial plane of the body. 1913Gray's Anat. (ed. 18) 236 Extending lateralwards..on either side is the superior nuchal line.1967Lateralward [see geniculum].