[1] : The Collaborative International Dictionary of English v.0.48

lysis \ly"sis\ limac"si^s, n. nl., fr. gr. ly`sis.
   med.
   the resolution or favorable termination of a disease, coming
   on gradually and not marked by abrupt change.
   1913 webster

   note: it is usually contrasted with crisis, in which the
         improvement is sudden and marked; as, pneumonia ends by
         crisis, typhoid fever by lysis.
         1913 webster

[2] : WordNet (r) 2.0

lysis
     n 1: recuperation in which the symptoms of an acute disease
          gradually subside
     2: biochemistry dissolution or destruction of cells such as
        blood cells or bacteria
     also: lyses pl
see also:
lyses 

Lysis >> L Words
Lysis, definition of term: Lysis
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