subluxation

from WordNet (r) 3.0 (2006)
subluxation
    n 1: partial displacement of a joint or organ
    
from The Collaborative International Dictionary of English v.0.48
Subluxation \Sub`lux*a"tion\, n. [Pref. sub + luxation: cf. F.
   subluxation.] (Surg.)
   An incomplete or partial dislocation.
   [1913 Webster]
    

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