infectious Meaning in the Cambridge Learner’s Dictionary
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Meaning of “infectious” - Learner’s Dictionary

infectious

adjective
 
 
/ɪnˈfekʃəs/
DISEASE An infectious disease can be passed from one person to another.Bacteria, moulds, germs and virusesPassing on illness and causing diseaseDisease and illness - general words
LAUGH Infectious laughter or feelings quickly spread from one person to another: infectious enthusiasm Humour and humorous
(Definition of infectious from the Cambridge Learner’s Dictionary © Cambridge University Press)
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