† theleˈmatic,a.Obs.rare. [f.Gr. θεληµατ-, stem of θέληµα will + -ic.] Of or pertaining to will or volition; voluntary. 1813–21Bentham OntologyWks. 1843 VIII. 207/2 Thelematic [motions], those in the production of which volition..is seen to be concerned.