404

From the HTTP error status code 404, meaning Not Found, returned by a web server responding to a request for a URL at which no resource exists.

• (UK) IPA^(key): /ˈfɔːɹəʊˌfɔː(ɹ)/

• Audio (AU)

  (file)

404 (not comparable)

1. (computing, slang) Not found, especially of a web page on the Internet.

   Bill was 404 all morning.

404 (plural 404s)

1. (computing) An error indicating that a web page could not be found.
   • 2007, Cristian Darie, Jaimie Sirovich, Professional Search Engine Optimization with ASP.NET: A Developer's Guide to SEO, John Wiley & Sons, →ISBN, page 113:

     Return 404s for all deleted pages. Some search engine marketers suggest redirecting old products to semantically related products instead of 404ing. This preserves link equity, whereas a 404 does not.

2. (Nigeria, colloquial) Dog meat.

404 (third-person singular simple present 404s, present participle 404ing, simple past and past participle 404ed or 404'd)

1. (computing) To return an error indicating that a web page could not be found.
   • 2007, Cristian Darie, Jaimie Sirovich, Professional Search Engine Optimization with ASP.NET: A Developer's Guide to SEO, John Wiley & Sons, →ISBN, page 113:

     Return 404s for all deleted pages. Some search engine marketers suggest redirecting old products to semantically related products instead of 404ing. This preserves link equity, whereas a 404 does not.

• four oh four

• RFC 2616: Hypertext Transfer Protocol – HTTP/1.1

• 0-4-4, 4-4-0

404

1. (Internet slang) (of contents on the Internet) to be censored; to be removed

• IPA^(key): /ka.tʁə.sɑ̃.katʁ/

• Audio

  (file)

404 f (plural 404)

1. Peugeot 404