Definition of periarteritis in US English:

periarteritis

noun

Medicine
  • Inflammation of the outer wall (adventitia) of an artery or arteries.

Origin

Mid 19th century; earliest use found in British and Foreign Medico-chirurgical Review. From peri- + arteritis, after German Periarteriitis.

Pronunciation

periarteritis

/ˌpɛrɪɑːtəˈrʌɪtɪs/