malleolar,a.Anat.|mæˈliːələ(r), ˈmælɪələ(r)| [f. malleol-us + -ar.] Pertaining to the malleolus. 1842E. Wilson Anat. Vade M. (ed. 2) 325 The malleolar arteries are distributed to the ankle-joint.1890Gray Anat. (ed. 12) 591 The malleolar arteries supply the ankle-joint.