subluxationPronunciation: /ˌsʌblʌkˈseɪʃ(ə)n/Definition of subluxation noun Medicine a partial dislocation: a subluxation associated with a fracture [mass noun]:anterior subluxation a slight misalignment of the vertebrae, regarded in chiropractic theory as the cause of many health problems. Derivatives subluxate verb Origin: late 17th century: from modern Latin subluxatio(n-) (see sub-, luxate)subluxation in other Oxford dictionaries Definition of subluxation in the US English dictionary