'kissing disease' definitions:

Definition of 'kissing disease'

From: WordNet
noun
An acute disease characterized by fever and swollen lymph nodes and an abnormal increase of mononuclear leucocytes or monocytes in the bloodstream; not highly contagious; some believe it can be transmitted by kissing [syn: infectious mononucleosis, mononucleosis, mono, glandular fever, kissing disease]

Definition of 'kissing disease'

From: GCIDE
  • kissing disease \kiss"ing dis*ease"\ Infectious mononucleosis; -- so called because often spread by kissing. [PJC]