pyorrhoea
Concise Oxford English Dictionary © 2008 Oxford University Press:
pyorrhoea /ˌpʌɪəˈriːə/ (US pyorrhea)
▶noun another term for periodontitis.
– origin C19: from Gk puo- (from puon ‘pus’) + rhoia ‘flux’.
'pyorrhoea' also found in these Oxford entries:

