Macnaha qaamuuska ereyga "bicuspid" waa ilig leh laba laab ama bar, gaar ahaan mid ka mid ah siddeedda ilig ee u dhexeeya jeexjeexyada iyo jeexjeexyada daanka aadanaha. Erayga "bicuspid" waxa uu ka soo jeedaa ereyga Laatiinka ee "bi-" oo macneheedu yahay laba iyo "cuspis" oo macneheedu yahay dhibic ama saadaal.
