Where does “supercuspidal” come from?

supercuspidal (English) comes from English super, from English super-ego, from German Über-Ich, from German Ich, from Middle High German ich, from Old High German ih, from Proto-West Germanic ik, from Proto-Germanic *ek — I.

supercuspidal (English): That has a zero Jacquet functor for every proper...

Definitions

  1. That has a zero Jacquet functor for every proper...

Ancestry of “supercuspidal”, step by step

supercuspidal traces back through two separate lines of ancestry.

via English super

StepLanguageWordMeaning
1EnglishsuperOf excellent quality, superfine; better than...
2Englishsuper-egoAlternative spelling of superego
3GermanÜber-Ichsuperego
4GermanIchego, the Ich; self, me, him, etc
5Middle High GermanichI
6Old High GermanihI
7Proto-West GermanicikI
8Proto-Germanic*ek
9Proto-Indo-Europeanéǵh₂I

via English cuspidal

StepLanguageWordMeaning
1EnglishcuspidalHaving cusps
2Spanish-alIn adjectives, indicating relation; In nouns,...
3Latin-ālis
4Proto-Italic-ālisforms relational adjectives
Every word from Proto-Indo-European éǵh₂Every word from Proto-Germanic *ekEvery word from Proto-West Germanic ik
supercuspidal — Etymology, Origin & Word History | Etymology Explorer