CAPTCHA
or cap·tcha
[ kap-chuh ]
nounDigital Technology.
an online test designed so that humans but not computers are able to pass it, used as a security measure and usually involving a visual-perception task: Site visitors must solve the “distorted text” CAPTCHA before posting comments.
a computer program that generates such tests.
Origin of CAPTCHA
1First recorded in 2000–05; C(ompletely) A(utomated) P(ublic) T(uring) (Test to Tell) C(omputers and) H(umans) A(part); inspired by capture
Words Nearby CAPTCHA
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use CAPTCHA in a sentence
Called "CAPTCHA," it's essentially a test that's easy for a human to complete, but difficult or impossible for a computer to do.
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