The quality or state of being recumbent or lying down; the condition of reclining or in a horizontal position.
From Latin decumbentia with the English suffix -cy (state or condition). This formal term emphasizes the ongoing state of recumbency rather than a momentary action.
Long-term 'decumbency'—being stuck lying down—was historically one of the worst fates because your body would deteriorate rapidly, which is why Victorian medicine obsessed over moving bedridden patients.
Complete word intelligence in one call. Free tier — 50 lookups/day.