the word 'ulcerate' is formed from the noun 'ulcer', which entered english from latin 'ulcus' (genitive 'ulceris'), meaning a sore or ulcer. the latin root is traced back to the proto-indo-european base elk-, meaning 'wound'. the suffix '-ate' is a productive verb-forming suffix borrowed from latin '-atus', used to denote a process or state. thus, the literal construction 'ulcer' + 'ate' logically means 'to become or make into an ulcer', directly describing the pathological process of sore formation.

Structure: ulcer + ate ulcer (latin, a sore, an ulcer) + ate (latin, verb-forming suffix meaning 'to become' or 'to make')