Definition of protuberation in English:

protuberation

noun

rare
  • A bulging or swollen part; a protuberance.

Origin

Early 17th century; earliest use found in Helkiah Crooke (1576–1648), physician and anatomist. From post-classical Latin protuberat-, past participial stem of protuberare to swell, to push forth + -ion; compare -ation.

Pronunciation

protuberation

/prəˌtʃuːbəˈreɪʃn//prəˌtjuːbəˈreɪʃn/