1. (

• infectious ,
• infective

) caused by infection or capable of causing infection; "viruses and other infective agents"; "a carrier remains infective without himself showing signs of the disease" ;

2. (

• infectious

) easily spread; "fear is exceedingly infectious; children catch it from their elders"- Bertrand Russell ;

3. (

• infectious

) of or relating to infection; "infectious hospital"; "infectious disease" ;