Definition of trigeminus in US English:

trigeminus

noun

Anatomy
  • The trigeminal nerve.

    • ‘The anatomic path of travel from the nasal mucous membrane to the genitals is through the fifth cranial nerve, or trigeminus which is supremely the ganglionic cranial nerve.’
    • ‘Trigeminus neuropathy is commonly seen in men due to a variety of reasons.’
    • ‘The nerves we are going to examine are the overorbital and infraorbital ramifications of the trigeminus.’
    • ‘To address this question we investigated the development of the N. trigeminus in the Japanese quail.’

Origin

Late 19th century: from Latin, literally ‘three born at the same birth’, extended to mean ‘threefold’.

Pronunciation

trigeminus

/traɪˈdʒɛmənəs//trīˈjemənəs/