Trigone of hypoglossal nerve
From Biology-Online Dictionary
trigone of hypoglossal nerve --> hypoglossal trigone
A slight elevation in the floor of the inferior recess of the fourth ventricle, beneath which is the nucleus of origin of the twelfth cranial nerve.
Synonym: trigonum nervi hypoglossi, eminentia hypoglossi, hypoglossal eminence, trigone of hypoglossal nerve, trigonum hypoglossi, tuberculum hypoglossi.