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English Wikipedia has articles on:
Wikipedia Wikipedia

Etymology 1[edit]

From the practice in US colleges of numbering courses, the initial (introductory) course commonly being numbered "101".


  • (UK, US) IPA(key): /ˈwʌnˌoʊ̯ˈwʌn/ (one-oh-one)
  • (file)


101 (not comparable)

  1. (chiefly US, often postpositive) Basic, beginner, starting from scratch.
    Geology 101 tells us that you can't build a reservoir on sandstone.
    • 2003 June 22, Holly Henderson, Liz Tigelaar, “Ski Trip”, in Totally Spies!, season 2, episode 21, spoken by Samantha “Sam” (Jennifer Hale), Marathon Media, via Teletoon:
      Ugh! Crash and burn! Next year, I’m taking flirting 101! I am so not good at this!
    • 2004, Daniel Dor, “From Englishization to Imposed Multilingualism: Globalization, the Internet, and the Political Economy of the Linguistic Code”, in Public Culture, volume 16, number 1:
      Companies sell directories, databases, reports, translation services, automatic translation software, and guidebooks for doing business away from home, which, in some cases, look much like simplified textbooks for Anthropology 101.
    • 2023 March 20, Rebecca Gillam, Bridie Wilkins, “Alexandra Daddario and her PT on how she built her Baywatch bod + her 10 regular workout rules”, in Women's Health[1]:
      However much you work out, but especially if it’s a lot, learning correct form and focusing on keeping your body safe is 101 — not just while exercising, but also how you move around day to day.

Etymology 2[edit]

Symbolizing more than 100, an already large number.


  • There is a difference in pronunciation depending on the person. Many people still use "one hundred and one", which also applies to almost all numbers after 101. However (outside Britain) it is becoming common to hear the "and" omitted, simply "one hundred one".



  1. A large number, particularly the size of an exhaustively long list of examples, uses, applications, etc.
    • 1996, Samela Harris, “Introduction”, in On a Shoestring: Recipes from the House of the Raising Sons, Wakefield Press, →ISBN, page vii:
      [T]o offset the massive cost of learning 101 ways to embellish spatchcock, perhaps the readers may need 101 ways to cook two-minute noodles.



Turkish Wikipedia has an article on:
Wikipedia tr
Turkish Wikipedia has an article on:
Wikipedia tr


  • IPA(key): /jyz ˈbiɾ/
  • Hyphenation: yüz‧bir


101 (definite accusative 101'i, plural 101'ler)

  1. (colloquial) Abbreviation of A101, a retail company
  2. Abbreviation of okey 101, a variant of okey
    • 2021 October 30, Twitter.com[2], archived from the original on January 5, 2023:
      Ders çalışıyorum arkadaşlarım 101’e çağırıyor hadi gel de gitme
      Here I am studying and my friends are inviting me over for a game of 101 how am I supposed to resist that?