The Collaborative International Dictionary
Rhizodont
Rhizodont \Rhiz"o*dont\, n. [Gr. ??? root + ???, ???, a tooth.] (Zo["o]l.) A reptile whose teeth are rooted in sockets, as the crocodile.
Wiktionary
rhizodont
n. (context zoology English) A reptile whose tooth are rooted in sockets, such as the crocodile.