bed·sore 
(bĕdsôr′)
(bĕdsôr′)n.
A pressure-induced ulceration of the skin occurring in persons confined to bed for long periods of time. Also called decubitus ulcer.
- protistan
- protistology
- protium
- proto-
- Proto-Algonquian
- protoceratops
- protocol
- protocolar
- protocolary
- protoctist
- protoderm
- protodermal
- protogalaxy
- Proto-Germanic
- protogynous
- protogyny
- protohistorian
- protohistoric
- protohistory
- protohuman
- Proto-Indo-European
- protolanguage
- protolithic
- protomartyr
- protomorph