Definition of trigeminus in English:


nounPlural trigemini

  • Each of the trigeminal nerves.

    • ‘The nerves we are going to examine are the overorbital and infraorbital ramifications of the trigeminus.’
    • ‘Trigeminus neuropathy is commonly seen in men due to a variety of reasons.’
    • ‘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.’
    • ‘To address this question we investigated the development of the N. trigeminus in the Japanese quail.’


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