Definitions

1. adjective

relating to or affecting the trigeminal nerve, which is a large nerve in the face that has three main branches

“The trigeminal nerve is responsible for facial sensation and motor control.”

2. noun

the trigeminal nerve or its three main branches

“The surgeon examined the trigeminal nerve before performing the operation.”

3. noun

a division of the brain, especially the pons and the medulla oblongata, that is part of the brainstem

“The trigeminal is divided into three main parts.”