infectious Meaning in the Cambridge English Dictionary Cambridge dictionaries logo

Meaning of “infectious” in the English Dictionary

"infectious" in British English

See all translations

infectiousadjective

uk   us   /ɪnˈfek.ʃəs/
C2 (of a ​disease) ​able to be ​passed one ​person, ​animal, or ​plant to another: an infectious ​diseaseC2 able to ​pass a ​disease from one ​person, ​animal, or ​plant to another: an infectious ​patient After the 21-day ​isolationperiod, ​Ebolasurvivors are no ​longer infectious.C2 Something that is infectious has an ​effect on everyone who is ​present and makes them ​want to ​join in: an infectious ​laugh infectious ​enthusiasm
(Definition of infectious from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"infectious" in American English

See all translations

infectiousadjective [not gradable]

 us   /ɪnˈfek·ʃəs/
able to ​infect someone: infectious ​diseases If something is infectious, it ​quicklyspreads or ​influencesothers: an infectious ​laugh
(Definition of infectious from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of infectious?
Add Cambridge dictionaries to your browser to your website
Word of the Day

hipster

someone who is very influenced by the most recent ideas and fashions

Word of the Day

Chest pains and palpitations: talking about illness (2)
Chest pains and palpitations: talking about illness (2)
by Liz Walter,
February 03, 2016
My previous post (My leg hurts: Talking about illness (1)) presented some general vocabulary to use at the doctor’s. This one looks at some more specific areas of illness and explains some useful words and phrases that you may need to use or understand on a visit to the doctor’s. There are several

Read More 

awesomesauce noun
awesomesauce noun
February 01, 2016
slang the state of being extremely good or enjoyable or something or someone that is extremely good or enjoyable Recovering from the awesomesauce of another fab #Vidcon!!

Read More