v. （使）形成溃疡，（使）溃烂（ulcerate 的现在分词）

Ulcerate \Ul"cer*ate\, v. i. [imp. & p. p. {Ulcerated}; p. pr. &
vb. n. {Ulcerating}.] [L. ulceratus, p. p. of ulcerare, fr.
ulcus ulcer.]
To be formed into an ulcer; to become ulcerous.