The Collaborative International Dictionary of English v.0.48:

Munificence \Mu*nif"i*cence\, n. [Cf. L. munire to fortify.]
   Means of defense; fortification. [Obs.] --Spenser.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Munificence \Mu*nif"i*cence\, n. [L. munificentia: cf. F.
   munificence.]
   The quality or state of being munificent; a giving or
   bestowing with extraordinary liberality; generous bounty;
   lavish generosity.

   Syn: Benevolence; beneficence; liberality; generosity;
        bounty; bounteousness. See Benevolence.
        [1913 Webster]

              The virtues of liberality and munificence.
                                                  --Addison.
        [1913 Webster]

WordNet (r) 3.0 (2006):

munificence
    n 1: liberality in bestowing gifts; extremely liberal and
         generous of spirit [syn: munificence, largess,
         largesse, magnanimity, openhandedness]