Meaning of “contagious” in the English Dictionary

british dictionary

"contagious" in British English

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contagiousadjective

uk /kənˈteɪ.dʒəs/ us /kənˈteɪ.dʒəs/

A contagious disease can be caught by touching someone who has the disease or a piece of infected clothing:

The infection is highly contagious, so don't let anyone else use your towel.

A contagious person has a contagious disease:

Keep him out of school until he's not contagious anymore.

A contagious feeling spreads quickly among people:

Fear is contagious.

(Definition of “contagious” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"contagious" in American English

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contagiousadjective

us /kənˈteɪ·dʒəs/

(of a disease) able to be caught by touching someone with the disease or something the person has touched or worn, or (of a person) having this type of disease:

a highly contagious strain of flu

fig. Contagious also means moving easily from one person to another:

The mood was contagious, and soon everyone was laughing.

(Definition of “contagious” from the Cambridge Academic Content Dictionary © Cambridge University Press)