- Communicable by contact, by a virus, or by a bodily
exhalation; catching; as, a contagious disease. - Conveying or generating disease; pestilential;
poisonous; as, contagious air. - Spreading or communicable from one to another; exciting
similar emotions or conduct in others.
Meaning of 'contagious' (Princeton's WordNet)
1 . contagious
[ s]
Meaning (1): - easily diffused or spread as from one person to another