antihelix

noun

an·​ti·​he·​lix -ˈhē-liks 

variants also anthelix

(ˈ)ant- 

plural antihelices -ˈhel-ə-ˌsēz, -ˈhē-lə-  or antihelixes -ˈhē-lik-səz 

: the curved elevation of cartilage within or in front of the helix