captcha
Translation
captcha
Examples
I had to solve a captcha to log in.
I had to solve a captcha to log in.
Grammar Patterns
((a captcha)) a test to tell humans and computers apart I failed the captcha three times.
Similar Words
Synonyms: security code, verification code
Etymology
It's an acronym for 'Completely Automated Public Turing test to tell Computers and Humans Apart'.
Memory Tips
Think of it as a test to 'capture' the difference between a human and a bot.