1

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See also: , !1, 1., l, ӏ, I, 𐑑, , and

1 U+0031, 1
DIGIT ONE
0
[U+0030]
Basic Latin 2
[U+0032]

Translingual[edit]

Etymology[edit]

Nepali variation of Devanāgarī script १ (1, “éka”), the source for Latin ‘1’ Tenth century “West Arabic” variation of the Nepali form of Hindu-Arabic numerals (compare Devanagari script (1, éka)), possibly influenced by Roman numeral .

Symbol[edit]

1 (previous 0, next 2)

  1. The cardinal number one, a single thing or unit.
  2. A digit in decimal and every other base numbering system, including binary, octal, and hexadecimal.
    15 × 134 = 2010
    0010 00112 (the number 35 in binary notation)
    0x1000E001 (the number 268492801 in hexadecimal notation)
  3. (mathematics) The identity element with respect to multiplication in a ring.
    a×1 = a
  4. (computer science) Bit state corresponding to binary digit 1, or on or true.
  5. (mathematics) A Boolean or truth value corresponding to true.
    f : Bk → B : B = {0, 1}
  6. (mathematics) The one-point topological space, trivial ring, trivial group, a category with a single object or a (canonical) singleton.
  7. (mathematics, set theory) indicator function of a set.
  8. (phonetics, often superscript) the pitch of a tone, either high or low depending on local convention; '1' is most commonly the highest or lowest pitch (but see 0)
    Synonyms: ˥, ˩
  9. (phonetics, Sinosphere, often superscript) tone number 1, typically identified with dark level yin ping (陰平). May simply be level ping tone () if the yin–yang distinction is not made.
    Synonym:
  10. (linguistics, superscript) accent 1 in Norwegian, Swedish and Limburgish.
    Norwegian/Swedish toneme 1 is sometimes transcribed with a simple primary stress mark, that is ˈ.

Alternative forms[edit]

The following forms are equivalent as a decimal digit:

The following additional forms are equivalent as a cardinal number:

Derived terms[edit]

See also[edit]

Other representations of 1:

English[edit]

Pronunciation[edit]

  • enPR: wŭn, IPA(key): /wʌn/, IPA(key): /wan/
  • (file)
  • Rhymes: -ʌn

Symbol[edit]

1

  1. The number one (1).
  2. (Internet slang, leetspeak, sarcastic) Deliberate misspelling of !, imitating someone who is too excited to consistently press the shift key while typing exclamation marks.
    A: sum1 hlep me plz im alwyz l0zin!!1!?!/?
    B: Thts bcuz ur st00pid!!!!!11!!oneone!!1!!eleven!1

Synonyms[edit]

  • (sarcastic, deliberate misspelling of !): one, eleven

Derived terms[edit]

Noun[edit]

1 (plural 1s)

  1. (sports, skateboarding, snowboarding, skiing) Clipping of 180. (180° spin)

Translations[edit]

Chinese[edit]

Pronunciation[edit]


Note:
  • Pronounced (yāo) when spelling phone number, one on dice or dominoes. This is similar to the English pronunciation of '0' as 'o' in strings of digits, such as 90210.
  • Subject to retrograde tone sandhi (see Wikipedia for details):
    • before fourth tone, pronounced with second tone;
    • before any other tone, pronounced with fourth tone;
    • when final (or at the end of a multi-syllable word), pronounced with the original tone (first tone);
    • when used in a series of numbers, as a part of a number, in dates, or in addresses, pronounced with the original tone (first tone).
  • When used between two reduplicated words, pronounced with neutral tone.
  • Cantonese
  • Gan
  • Hakka
  • Jin
  • Min Bei
  • Note:
    • cì - colloquial;
    • ĭ - literary.
  • Min Dong
  • Note:
    • siŏh - colloquial;
    • ék - literary.
  • Min Nan
  • Note:
    • chi̍t - colloquial;
    • it - literary.
    Note:
    • zêg8 - colloquial;
    • ig4, êg4 - literary (ig4 - other places, êg4 - Jieyang).
  • Wu
  • Xiang
  • Noun[edit]

    1

    1. one
    2. (gay slang) top

    Derived terms[edit]

    Related terms[edit]

    • 0 (líng)
    • 0.5 (língdiǎnwǔ)

    Swedish[edit]

    The Nordic pharmacy chain Apotek1.

    Symbol[edit]

    1

    1. The number one (1).
      Synonyms: ett, en
    2. (Internet slang, leetspeak, sarcastic) Deliberate misspelling of !

    Suffix[edit]

    1

    1. (nonstandard suffix) -et (singular indefinite nominative; the)
      Apotek1
      The Pharmacy
      Bud1
      The Courier
    2. (nonstandard suffix) -et (neuter singular)
      Mog1 av dig.
      Very mature of you.

    Derived terms[edit]

    • mog1 (mature) (slang)