| Main Entry: | captcha |
| Part of Speech: | n |
| Definition: | a computer-generated squiggly-letter test that must be typed in by Internet/Web users to prove they are human |
| Example: | In order to send an email about a New York Times article, the site makes you type in a captcha. |
| Etymology: | by 2001; acronym for Completely Automatic Public Turing test to tell Computers and Humans Apart |