infectious mononucleosis

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A common, acute, infectious disease, usually affecting young people, caused by Epstein-Barr virus and characterized by fever, swollen lymph nodes, sore throat, and lymphocyte abnormalities.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• 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