- decubital ulcer
- decubitus ulcer an ulcer caused by arterial occlusion or prolonged pressure, such as when a patient lies still in bed for a long period or is confined to a wheelchair; called also decubitus, bed sore, and pressure u. or sore.
Decubitus ulcer of the sacral area in an 85-year-old man, with exposure of the sacrum and necrosis of surrounding muscles.
Medical dictionary. 2011.