decubitus ulcer definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Origin: Medieval Latin dēcubitus, lying down, being bedridden, from past participle of Latin dēcumbere, to lie down; see decumbent.
decubitus ulcer - Medical Definition