911

US/ˌnaɪ̯n wən ˈwən/US/ˈnaɪn əˌlɛvən/

proper noun

The telephone number for emergency services in the United States, Canada, Mexico, Belize, Costa Rica, Argentina, Uruguay, Ecuador, Saudi Arabia, Egypt, Jordan, Liberia, Ethiopia, the Philippines, Anguilla, Palau, and Tonga.

“After witnessing what was possibly a robbery, she called 911.”

Similar
Porsche 911

Meanings

9111

proper noun

alternative 9-1-1 · alternative nine-one-one · alternative nine one one

  1. The telephone number for emergency services in the United States, Canada, Mexico, Belize, Costa Rica, Argentina, Uruguay, Ecuador, Saudi Arabia, Egypt, Jordan, Liberia, Ethiopia, the Philippines, Anguilla, Palau, and Tonga.First known use 1968

    After witnessing what was possibly a robbery, she called 911.

    4 more examples

    When you call 911 in the United States, a local dispatcher usually answers the phone with "911" or "911. What's your emergency?"

    I don't know why they couldn't just keep it as it was! How hard is it to remember 911? You mean 999... I mean 999! That's the American one! Yeah!

    2006 Feb. 3, Graham Linehan, The IT Crowd, Season 1, Episode 2

    Well, look, I wear a mask, I try not to be a maskhole about it. If I see — if I see somebody who doesn't have a mask, I don't call 911.

    2021 March 18, John Kennedy, quotee, “SEN. JOHN KENNEDY (R-LA) IS INTERVIEWED ON FOX NEWS”, in Political Transcript Wire, Lanham

    Many still assume that “you call 988 and — much like 911 — that means someone is going to be dispatched to you,” said Hannah Wesolowski, NAMI’s chief advocacy officer. “For the vast majority — almost all callers — that’s not actually the case.”

    2023 July 13, Christina Caron, “Is the New 988 Suicide Hotline Working?”, in The New York Times
noun911 (countable and uncountable, plural 911s)

plural 911s

  1. BelizeCanadaPhilippinesUScountablemetonymicallyuncountableLiberiaEmergency services; emergency service personnel.

    911 is sending an ambulance.

  2. BelizeCanadaPhilippinesUScolloquialcountablemetonymicallyuncountableLiberiaAn emergency phone call.
  3. BelizeCanadaPhilippinesUScolloquialcountablemetonymicallyuncountableLiberiaAn emergency.
verb911 (third-person singular simple present 911s, present participle 911ing, simple past and past participle 911ed)

present singular third person 911s · participle present 911ing · participle past 911ed · past 911ed

  1. BelizeCanadaPhilippinesUScolloquialLiberiaTo call emergency services.

    London hairstylist Rick Haylor for the John Frieda Salon—the man Nicole Kidman 911s when she wants her curly mop to lie down and look glamorous—tells you how to go straight.

    1997 August 28, “50 New Fall Hair Looks”, in Cosmopolitan, volume 223, number 2, page 208

9112

proper noun
  1. automotiveA prominent family of sports cars manufactured by Porsche.First known use 1964

    Synonyms: Porsche 911

Synonyms & antonyms

proper nounA prominent family of sports cars manufactured by Porsche.

Similar
Porsche 911

Origin

911 · proper noun, noun, verb

Chosen by the United States in the 1960s in place of the older British 999 number as a better way to avoid accidental calls from push-button telephones. It is officially pronounced "nine-one-one" and not "nine-eleven;" the latter refers to the September 11, 2001 attacks in New York and Washington, but the pronunciation "nine-one-one" for the phone number was universal even prior to the attacks. 9/11 is universally distinguished from 911 to refer the September 11 attacks. Officially written as 9-1-1 in regulations and materials from the United States National Emergency Number Association and Federal Communications Commission, which is also advocated by some media style guides.

Full word history & related roots →

911 · proper noun

  1. GermanNeunelfer
  2. English911

Selected so as to be able to continue using most of the labelling from its former name 901 after its competitor Peugeot objected that it had the legal rights to 3-digit automotive model names with a central 0 in the French market. The name 901 had been selected since it was the first version of the 6th major design project after the earlier Porsche 356, which the 911 largely replaced. The name is pronounced "nine-eleven" by analogy with German Neunelfer.

Full word history & related roots →
Cite this entry
APA

911. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/911

MLA

“911.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/911. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “911,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/911.

Source: 911 on Wiktionary, CC BY-SA 4.0.