captcha

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. {{lb|en|computing|Internet}} A [[computerized]] [[test]] [[require|requiring]] the [[human]] user to [[perform]] a [[task]] [[deemed]] to be [[difficult]] to [[automate]], such as [[enter]]ing a [[display]]ed [[series]] of [[distorted]] [[character]]s or [[describing]] [[image]]s, to [[demonstrate]] that they are a [[human]] and not a [[computer program]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.