Source : Webster's Revised Unabridged Dictionary (1913)

Plenitude \Plen"i*tude\, n. [L. plenitudo, fr. plenus full; cf.
   F. plenitude.]
   1. The quality or state of being full or complete; fullness;
      completeness; abundance; as, the plenitude of space or
      power.

   2. Animal fullness; repletion; plethora. [Obs.]

Source : WordNet®

plenitude
     n : a full supply; "there was plenty of food for everyone" [syn:
          {plenty}, {plentifulness}, {plenteousness}, {plentitude}]