Source : Webster's Revised Unabridged Dictionary (1913)

Superordination \Su`per*or`di*na"tion\, n. [Pref. super- +
   ordination: cf. L. superordinatio.]
   The ordination of a person to fill a station already
   occupied; especially, the ordination by an ecclesiastical
   official, during his lifetime, of his successor. --Fuller.

Source : WordNet®

superordination
     n : the semantic relation of being superordinate or belonging to
         a higher rank or class [syn: {hypernymy}]