Dictionary

CAPTCHA en · NOUN

Pronunciation

• /ˈkæp.t͡ʃə/

Etymology

Coined by a team of researchers at Carnegie Mellon University in 2000 as a loose acronym of “completely automated public Turing test to tell computers and humans apart”.

Meanings

1. (Internet) A computerized test requiring the human user to perform a task deemed to be difficult to automate, such as entering a displayed series of distorted characters or describing images, to demonstrate that they are a human and not a computer program.
   • A CAPTCHA is a quick check to make sure that an actual person, rather than a computer program, is using the website. Web applications use CAPTCHA […] 2014, Laura Fitton, Anum Hussain, Brittany Leaning, Twitter For Dummies, John Wiley & Sons, →ISBN, page 24:
   • CAPTCHA puzzles are intended to be easy for a human to solve but difficult for a computer. Because of the monetary value to spammers of circumventing these controls, an arms race has occurred in which typical CAPTCHA puzzles have […] 2011, Dafydd Stuttard, Marcus Pinto, The Web Application Hacker's Handbook: Finding and Exploiting Security Flaws, John Wiley & Sons, →ISBN:

Forms

Deriveds

CRAPTCHA

Relateds

Turing test

Translations (17)

de rarely CAPTCHA (computerized test) · am ካፕቻ (computerized test) · ko 보안 문자 (computerized test) · cmn 驗證碼 /验证码 (computerized test) · ti ካፕቻ (computerized test) · th แคปต์ชา (computerized test) · tr CAPTCHA (computerized test) · ta காப்ச்சா (computerized test) · ru ка́пча (computerized test) · fr Captcha (computerized test) · he קאפצ׳ה (computerized test) · nl captcha (computerized test) · gl CAPTCHA (computerized test) · pl CAPTCHA (computerized test) · de Captcha (computerized test) · fr CAPTCHA (computerized test) · ko 캡차 (computerized test)