1875, from hernia (q.v.) + -ation, element forming nouns of action.
Entries linking to herniation
hernia n.
late 14c., hirnia, from Latin hernia "a rupture," related to hira "intestine," from PIE root *ghere- "gut, entrail." The re-Latinized spelling of the English word is from 17c. Related: Herniated (1819).