The Collaborative International Dictionary
Marasmus senilis
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.
Wiktionary
marasmus senilis
n. progressive atrophy of the aged