-ə̇d.əs, -ə̇təs noun
( plural decubi·ti -ə̇d.ˌī, -ə̇ˌtī, -ē)
Etymology: New Latin, from Latin decubitus, past participle of decumbere to lie down, from de down, away + -cumbere to lie down (akin to cubare to lie down) — more at de- , hip
1. : a position assumed in lying down
the dorsal decubitus
2.
a. : ulcer
b. or decubitus ulcer : bedsore
3. : prolonged lying down (as in bed)