English Explanatory Dictionary

CAPTCHA

English dictionary entry

Meanings

noun
  1. 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.
noun
  1. Alternative letter-case form of CAPTCHA.
noun
  1. Alternative letter-case form of CAPTCHA.

Pronunciation

/ˈkæp.t͡ʃə/

Word forms

CAPTCHA CAPTCHAs

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”.

Related words

Turing test

Derived words

CRAPTCHA
This entry uses open data from Wiktionary (CC BY-SA/GFDL). Word forms are used for search and are not indexed as separate pages.
Back to search All on C Russian dictionary Dahl dictionary