tricuspidate

[ trahy-kuhs-pi-deyt ]

/ traɪˈkʌs pɪˌdeɪt /

having three cusps or flaps.

Origin of tricuspidate

First recorded in 1745–55; tricuspid + -ate¹

Tricuspidate: ending in three points: with three cusps or teeth.

Explanation of Terms Used in Entomology |John. B. Smith
The last molar is tricuspidate in the upper jaw; that of the lower jaw has five cusps.

The Cambridge Natural History, Vol X., Mammalia |Frank Evers Beddard
The lower premolar is tricuspidate and the first and second molars are quadritubercular with a broad cingulum.

Speciation in the Kangaroo Rat, Dipodomys ordii |Henry W. Setzer