Basic Guidelines For English Spellings
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.’
Late 18th century (as puorrhoea): via modern Latin from Greek puo- (from puon ‘pus’) + rhoia ‘flux’ (from rhein ‘to flow’).
Are You Learning English? Here Are Our Top English Tips