(.)(ˌ)triks, (.)_trēks noun suffix
( plural -tri·ces (.)_trəˌsēz, (.)ˈtrī(ˌ)sēz ; or -trixes )
Etymology: Middle English, from Latin, feminine of -tor, ending of agent nouns, from -tus, past participle ending + -or — more at -ed
1. : female that does or is associated with a (specified) thing
avia trix
narra trix
inheri trix
— compare -tress
2. : straight line — in geometry
trisec trix
direc trix
trac trix