Where does “diplo-” come from?

diplo- (New Latin) comes from Ancient Greek γλῶσσα, from Old Norse glotta, from Proto-Germanic glutōną, from Proto-Indo-European ǵʰel- — to shine, glimmer, glow; to shimmer, gleam;...

Ancestry of “diplo-”, step by step

StepLanguageWordMeaning
1Ancient Greekγλῶσσαa tongue; a language; the mouthpiece of a pipe
2Old Norseglottato grin, smile scornfully
3Proto-GermanicglutōnąTo stare; gawk
4Proto-Indo-Europeanǵʰel-to shine, glimmer, glow; to shimmer, gleam;...

Words derived from “diplo-”

Every word from Proto-Indo-European ǵʰel- →Every word from Proto-Germanic glutōną →Every word from Old Norse glotta →