Definition of factor x:
(N) :
Coagulation factor X, or Stuart factor, is an enzyme of the coagulation cascade, encoded in humans by F10 gene.
(N) :
the Spanish version of the British television music competition The X Factor, created by Simon Cowell.
(N) :
Factor X, or Coagulation factor X, is an enzyme.
(N) :
Factor X Chile is a television show, adapted from the original UK show as part of The X Factor franchise.
(N) :
the Portuguese version of the television music competition The X Factor, originally created by Simon Cowell.