† proctoncusn. [ < procto-comb. form + ancient Greek ὄγκος mass, bulk, in Byzantine Greek also tumour (see onco-comb. form)] MedicineObsoleterare swelling of the anus.Apparently only attested in dictionaries or glossaries.
ΚΠ
1848 R. DunglisonMed. Lexicon (ed. 7) 702/1Proctoncus, swelling of the anus.