CAPTCHA

noun

or captcha

1
an acronym which describes a program that protects websites from spammers by providing a test (e.g. a distorted text) which humans can do but computers cannot. It stands for ‘Completely Automated Public Turing Test To Tell Computers and Humans Apart’ and is a trademark of Carnegie Mellon University. There are visual as well as audio captchas in use.
Recognising the kinds of characters used in CAPTCHAs remains a significant challenge in computer vision.
Submitted on:
28/09/2009
Open Dictionary - September2009

Noun☞CAPTCHA

CAPTCHA

trademark

UK /ˈkæpˌtʃə/

1
computingcompletely automated public Turing test to tell computers and humans apart: a system for checking that a human is using a computer, often consisting of a group of letters in strange shapes that the person must type again
Synonyms and related words
Codes and codification
alphanumeric
break
CAPTCHA

CAPTCHA

trademark

US /ˈkæpˌtʃə/

1
computingcompletely automated public Turing test to tell computers and humans apart: a system for checking that a human is using a computer, often consisting of a group of letters in strange shapes that the person must type again
Synonyms and related words
Codes and codification
alphanumeric
break
CAPTCHA

单词	captcha
释义	CAPTCHA noun Other entries for this word CAPTCHA or captcha DEFINITIONS1 1 an acronym which describes a program that protects websites from spammers by providing a test (e.g. a distorted text) which humans can do but computers cannot. It stands for ‘Completely Automated Public Turing Test To Tell Computers and Humans Apart’ and is a trademark of Carnegie Mellon University. There are visual as well as audio captchas in use. Recognising the kinds of characters used in CAPTCHAs remains a significant challenge in computer vision. Submitted on: 28/09/2009 Open Dictionary - September2009 Noun☞CAPTCHA CAPTCHA trademark UK /ˈkæpˌtʃə/ Other entries for this word CAPTCHA noun captcha noun at CAPTCHA DEFINITIONS1 1 computingcompletely automated public Turing test to tell computers and humans apart: a system for checking that a human is using a computer, often consisting of a group of letters in strange shapes that the person must type again Synonyms and related words Codes and codification alphanumeric break CAPTCHA CAPTCHA trademark US /ˈkæpˌtʃə/ Other entries for this word CAPTCHA noun captcha noun at CAPTCHA DEFINITIONS1 1 computingcompletely automated public Turing test to tell computers and humans apart: a system for checking that a human is using a computer, often consisting of a group of letters in strange shapes that the person must type again Synonyms and related words Codes and codification alphanumeric break CAPTCHA
随便看	on your doorstep on your feet on (your) guard on (your) hands and knees on your knees on your last legs shade into shading shadow shadow boxing shadow puppet shadowy shady shaft shag shagged shaggy shaggy dog story shah shaitan shake shake a leg shake down shakedown shake hands (with someone)