The story
After Finnish folklorist Antti Aarne, who originally devised the index, and its elaborators American folklorist Stith Thompson and German folklorist Hans-Jörg Uther.
Etymology from Wiktionary, CC BY-SA 4.0.
Aarne-Thompson-Uther index
Today it means: A catalogue of traditional tales based around motifs used in folklore studies. Full definition →