Definify.com
Webster 1913 Edition
marasmus
ma-ras′mus
,Noun.
 [NL., fr. Gr. [GREEK] , fr. [GREEK], 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.
 Webster 1828 Edition
Marasmus
MARAS'MUS
,Noun.
 Atrophy; a wasting of flesh without fever or apparent disease; a kind of consumption.