Communicable by contact, by a virus, or by a bodily exhalation; catching; as, a contagious disease.
- Of or relating to contagion.
- Transmissible by direct or indirect contact; communicable: a contagious disease.
- Capable of transmitting disease; carrying a disease: stayed at home until he was no longer contagious.
- Spreading or tending to spread from one to another; infectious: a contagious smile.