What does ulcerātiō mean in Latin?

ulcerātiō, a noun, means “sore, ulcer; ulceration”.

What is the genitive of ulcerātiō?

The genitive singular is ulcerātiōnis. ulcerātiō is feminine, third declension.

noun · femininethird declension

ulcerātiō f (genitive ulcerātiōnis)

ulcĕrātĭo, ōnis, f. ulcero,

I. a breaking out into sores, ulceration; a sore, ulcer, Plin. 34, 11, 27, § 115 (dub.; al. exulcerationes). —In plur., Sen. Const. 6, 3.