Source : Webster's Revised Unabridged Dictionary (1913)

Subsumption \Sub*sump"tion\, n.
   1. The act of subsuming, or of including under another.

            The first act of consciousness was a subsumption of
            that of which we were conscious under this notion.
                                                  --Sir W.
                                                  Hamilton.

   2. That which is subsumed, as the minor clause or premise of
      a syllogism.

            But whether you see cause to go against the rule, or
            the subsumption under the rule.       --De Quincey.

Source : WordNet®

subsumption
     n 1: the premise of a syllogism that contains the minor term
          (which is the subject of the conclusion) [syn: {minor
          premise}, {minor premiss}]
     2: incorporating something under a more general category