Noun
trigeminal nerve (plural trigeminal nerves)
(neuroanatomy) Each of the fifth and largest pair of cranial nerves responsible for sensation and motor function in the face and mouth.
Synonyms: fifth cranial nerve, fifth nerve
Coordinate terms: olfactory nerve, optic nerve, oculomotor nerve, trochlear nerve, abducens nerve, facial nerve, vestibulocochlear nerve, glossopharyngeal nerve, vagus nerve, accessory nerve, hypoglossal nerve
Meronyms: ophthalmic nerve, maxillary nerve, mandibular nerve
Intensely smelling substances, for example ammonia, may lead to the activation of pain receptors ( nociceptors ) of the trigeminal nerve that are located in the nasal cavity and this can confound olfactory testing. Source: Internet
Involvement of the trigeminal nerve can cause numbness of the face. Source: Internet