Noun
pressure ulcer (plural pressure ulcers)
English Wikipedia has an article on:pressure ulcerWikipedia
(medicine, nursing) An ulcer caused by prolonged pressure on the skin as a person lies in a bed or sits in a chair or wheelchair; preventable with sufficient nursing care.
Synonyms: (dated) bedsore, (dated) decubitus, (dated) decubitus ulcer, (dated) pressure sore, pressure injury