captcha
noun/ˈkæptʃə/
/ˈkæptʃə/
(also CAPTCHA)
[countable, uncountable]- a computer program that is designed to recognize the difference between human users and machines, often showing letters or numbers with their shape changed slightly
- The captcha can only be solved by humans.
Word OriginAn acronym from Completely Automated Public Turing test to tell Computers and Humans Apart.Definitions on the go
Look up any word in the dictionary offline, anytime, anywhere with the Oxford Advanced Learner’s Dictionary app.
Check pronunciation:
captcha