404

adj, noun, verb — 4 senses

404

adj

UK /ˈfɔːɹəʊˌfɔː(ɹ)/

Etymology 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.

1

Computing, Engineering, Mathematics, Natural sciences, Physical sciences, Sciences Slang Not found, especially of a web page on the Internet.

Bill was 404 all morning.

404

noun

Etymology 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.

1

Computing, Engineering, Mathematics, Natural sciences, Physical sciences, Sciences An error indicating that a web page could not be found.

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.2007, Cristian Darie, Jaimie Sirovich, Professional Search Engine Optimization with ASP.NET: A Developer's Guide to SEO, John Wiley & Sons, →ISBN, page 113:

2

Nigeria, Colloquial Dog meat.

Derived terms: 404 page, soft 404

404

verb

Etymology 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.

1

Computing, Engineering, Mathematics, Natural sciences, Physical sciences, Sciences To return an error indicating that a web page could not be found.

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.2007, Cristian Darie, Jaimie Sirovich, Professional Search Engine Optimization with ASP.NET: A Developer's Guide to SEO, John Wiley & Sons, →ISBN, page 113:

Related terms: four oh four

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.