† undeˈphlegmated,ppl.a.Obs. (un-1 8.) 1664Boyle Exp. Colours iii. xl. 309 Common and undephlegmated Aqua-fortis.1758Elaboratory laid Open 161 The undephlegmated spirit may be used. So † undeˈphlegmedppl. a.Obs. 1673Phil.Trans. VIII. 6002 Not when 'tis undephlegmed, but when highly rectified.