1. (

• contagious_disease ,
• contagion

) any disease easily transmitted by contact ;

2. (

• infection ,
• contagion ,
• transmission

) an incident in which an infectious disease is transmitted ;

3. (

• contagion ,
• infection

) the communication of an attitude or emotional state among a number of people; "a contagion of mirth"; "the infection of his enthusiasm for poetry" ;