† aceˈphalisis, akephalisis,n.Obs.rare—1. [Gr. in form, as if n. of action, f. a vb.* ἀκέϕαλίζειν, f. ἀκέϕαλ-ος headless.] Headlessness. 1611Speed Hist.Gt.Brit. ix. x. 20 King Edward..would not neglect the aduantage of this Akephalisis, or want of a knowne head in Scotland.