Definition of pyorrhea in US English:

pyorrhea

(also pyorrhea alveolaris) (British pyorrhoea)

noun

  • another term for periodontitis
    • ‘In the past periodontal disease was known as pyorrhoea.’
    • ‘One patient with a history of bowel irregularity was suffering from pyorrhea.’

Origin

Early 19th century: from Greek puo- (from puon ‘pus’) + rhoia ‘flux’ (from rhein ‘to flow’).

Pronunciation

pyorrhea

/ˌpaɪəˈriə//ˌpīəˈrēə/