trifluoride

[ trahy-floo r-ahyd, -flawr-, -flohr- ]
/ traɪˈflʊər aɪd, -ˈflɔr-, -ˈfloʊr- /

noun Chemistry.

a fluoride containing three atoms of fluorine.

Origin of trifluoride

First recorded in 1840–50; tri- + fluoride