Meaning ofinfectiousin English

Adjective

1. caused by external agents (bacteria, viruses, etc.)
2. capable of spreading disease; transmitting pathogens
   The doctor warned that the patient's infectious disease could spread quickly.
3. spreading feelings or behavior quickly
   The comedian's infectious laughter filled the entire room.
4. transmitted between people through air
   The nurse wore a mask to prevent the spread of the infectious virus.