a. [ Cf. OF. momental. ] [ Obs. ] 1. Lasting but a moment; brief. [ 1913 Webster ]
Not one momental minute doth she swerve. Breton. [ 1913 Webster ]
2. Important; momentous. [ 1913 Webster ]
3. (Mech.) Of or pertaining to moment or momentum. [ 1913 Webster ]
adv. For a moment. [ Obs. ] [ 1913 Webster ]