Looking for the meaning of the word CHALLENGE in English for both noun and verb forms from the Oxford Dictionary? Below, you can explore all possible meanings and definitions of CHALLENGE with sentence examples. You can also use the “AUDIO PRONUNCIATION” track to check the correct pronunciation in British English.
Word: Challenge
Speech Type: Noun
Middle English (in the senses ‘accusation’ and ‘accuse’): from Old French chalenge (noun), chalenger (verb), from Latin calumnia ‘calumny’, calumniari ‘calumniate’
ˈtʃalɪn(d)ʒ
a call to someone to participate in a competitive situation or fight to decide who is superior in terms of ability or strength
Short Definition:invitation to compete/fight
Examples:- he accepted the challenge
a call to prove or justify something
Short Definition:call for proof/justification
Examples:- a challenge to the legality of the banning order
the administration of an immunogenic or infectious agent to an animal or person, in order to study the resulting immune response or measure the efficacy of a vaccine
Short Definition:exposure to disease
Examples:- challenge trials have yielded positive results when carefully and ethically conducted
- human challenge studies occur in tightly controlled settings
- recently vaccinated calves should be protected from challenge
Word: Challenge
Speech Type: Verb
ˈtʃalɪn(d)ʒ
invite (someone) to engage in a contest
Short Definition:invite to join in contest
Examples:- he challenged one of my men to a duel
- organizations challenged the government in by-elections
dispute the truth or validity of
Short Definition:dispute truth/validity
Examples:- it is possible to challenge the report's assumptions
administer an immunogenic or infectious agent to an animal or person, in order to study the resulting immune response or measure the efficacy of a vaccine
Short Definition:expose to disease
Examples:- the mice were challenged with the influenza virus
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