English Etymology Etymology treeProto-Indo-European *ǵneh₃-Proto-Indo-European *-sḱétiProto-Indo-European *ǵn̥h₃sḱétider.Proto-Hellenic *gignṓskōAncient Greek γιγνώσκω (gignṓskō)Proto-Indo-European *-mṓAncient Greek -μων (-mōn)Ancient Greek γνώμων (gnṓmōn)bor.Etruscanbor.?Latin normaProto-Indo-European *h₂el-Proto-Indo-European *-isProto-Indo-European *h₂élisder.?Proto-Italic *-ālisLatin -ālisLatin nōrmālisder.English normalEnglish -iseEnglish normaliseProto-Indo-European *-tḗrProto-Indo-European *-dʰlomder.Proto-Indo-European *-dʰlisProto-Italic *-ðlisLatin -bilisLatin -ābilisOld French -ablebor.Middle English -ableEnglish -ableEnglish normalisableFrom normalise + -able. Adjective normalisable (not comparable) Alternative spelling of normalizable.