Definitions

1. noun

In a tooth, the conical portion of the crown formed by the union of the dentin and enamel.

“The paleontologist studied the protocone of the fossilized dinosaur tooth to learn more about its diet.”

2. noun

The anterior and most prominent part of the masticatory cone in the teeth of certain extinct mammals.

“The protocone played a crucial role in the evolution of the mammalian dentition.”