-ˌtərməˈnālə̇s noun
( plural sulci termina·les -ā(ˌ)lēz)
Etymology: New Latin, literally, terminal groove
1. : a V-shaped groove separating the anterior two thirds of the tongue from the posterior third and lodging the circumvallate papillae
2. : a shallow groove on the outside of the right atrium of the heart