'Lysis' definitions:

Definition of 'lysis'

From: WordNet
noun
Recuperation in which the symptoms of an acute disease gradually subside
noun
(biochemistry) dissolution or destruction of cells such as blood cells or bacteria

Definition of 'Lysis'

From: GCIDE
  • Lysis \Ly"sis\ (l[imac]"s[i^]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]