1

See also: , !1, 1., l, ӏ, I, and Ӏ

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

Translingual

Etymology

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

Symbol

The digit ‘1’ in a digital seven segment display.

1

  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
    0x1000E001
  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.

Alternative forms

Derived terms

See also

See also

Other representations of 1:


English

Pronunciation

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

Symbol

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

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

Derived terms

Translations


American Sign Language

Numeral

1 (transliteration needed)

  1. one

Noun

1 (transliteration needed)

  1. A metasyntactic variable used to denote a person.

Chinese

Pronunciation


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.
Note:
  • cì - colloquial;
  • ĭ - literary.
Note:
  • siŏh - colloquial;
  • ék - literary.
Note:
  • chi̍t - colloquial;
  • it - literary.
Note:
  • zêg8 - colloquial;
  • ig4, êg4 - literary (ig4 - other places, êg4 - Jieyang).

Noun

1

  1. one
  2. (gay slang) top
  • 0 (líng)
  • 0.5 (língdiǎnwǔ)

Derived terms

  • 10 (yīlíng)
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