Source : Webster's Revised Unabridged Dictionary (1913)

Marasmus \Ma*ras"mus\, n. [NL., fr. Gr. ?, fr. ?, to quench, as
   fire; pass., to die away.] (Med.)
   A wasting of flesh without fever or apparent disease; a kind
   of consumption; atrophy; phthisis.

         Pining atrophy, Marasmus, and wide-wasting pestilence.
                                                  --Milton.

   {Marasmus senilis} [L.], progressive atrophy of the aged.