surnaturellement (-rèl-mān), adv., supernaturally, preternaturally.
surnom (-non), n.m., surname, cognomen.
surnommer, v.a., to surname.
surnuméraire, n.m. and adj., supernumerary.
surnumérariat, n.m., supernumerary time.
suron, n.m., seroon; (bot.) earth-nut.
suros (-rô), n.m., (vet.) splint.
suroxydation, n.f., (chem.) peroxidizing, superoxidation.
suroxyde, n.m., (chem.) peroxide.
suroxyder, v.a., (chem.) to peroxidize.