Massage for Subluxation

What does subluxation mean in medical terms?
incomplete dislocation
A subluxation is usually defined as a partial or incomplete dislocation.
Define-
a partial dislocation.
“a subluxation associated with a fracture”
a slight misalignment of the vertebrae, regarded in chiropractic theory as the cause of many health problems.
“Subluxation” is a term used by some chiropractors to describe a spinal vertebra that is out of position in comparison to the other vertebrae, possibly resulting in functional loss and determining where the chiropractor should manipulate the spine.