To develop an ulcer; become ulcerous. (verb-intransitive)
To cause ulceration of. (verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "ulcerate" in a sentence
"If untreated, the lesion may blister, ulcerate and eventually result in dead tissue."
"The things to look out for are: if the mole rapidly enlarges, changes in colour ie it becomes darker or lighter or goes red, if it is irregular in outline, if it starts to itch – and certainly if it starts to bleed or ulcerate."
"They all have ridges when they come in, and unless they're addressed, they become very sharp and they actually chew and ulcerate the insides of their mouth."