The compound adjective 'whole-body' is a modern English formation built from two native Germanic elements. 'Whole' originates from the Old English hāl, which carried the core senses of being uninjured, sound, and complete. 'Body' derives from Old English bodig, referring specifically to the physical trunk or structure. When combined, the literal meaning 'entire physical structure' logically extends to describe medical treatments, scans, or experiences that are comprehensive and systemic, affecting the complete organism rather than a localized part. This transparent compounding follows a common English pattern for creating precise technical and descriptive terms.

Structure: whole (entire) + body (physical form) whole: From Old English hāl (sound, healthy, entire), of Germanic origin. Functions as an adjective meaning 'entire' or 'complete'. body: From Old English bodig (trunk, chest, torso, structure of a human or animal), of Germanic origin. Functions as a noun meaning 'the physical structure'.