1.AdjectiveHaving teeth of different types (like most mammals).
2.AdjectiveOf bivalves or their hinge teeth: having two to three wedge-shaped cardinal teeth set in the centre near the umbones, generally also with elongated lateral teeth on the anterior and posterior margins.
"The heterodont arrangement is characteristic of the Venus clams and cockles."
3.NounA heterodont animal.
A heterodont bivalve.
4.NounA heterodont bivalve.
5.NounA snake of the genus Heterodon which is native to North America.