Infectious
/ˌɪˈnfɛkʃəs/
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Definition
(adj) Caused by an agent that enters the host's body (such as a bacterium, virus, parasite, or prion); often, also, transmitted among hosts via any of various routes (for example, contact, droplet-borne, airborne, waterborne, foodborne, fomite-borne, or bloodborne).
Sentence Examples
The infectious case was isolated from other patients.
Mumps is an infectious disease.
CEFR Practice Quiz
The young girl has a very ____ laugh that soon had everyone in the room laughing along.