1

Definition from Wiktionary, the free dictionary
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See also: I, l, Ӏ, and ӏ

Translingual[edit]

Un1.svg
Unicode name DIGIT ONE
Unicode block Basic Latin
Codepoint U+0031
0 ← Basic Latin → 2

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

  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

See also[edit]

Alternative forms[edit]

Derived terms[edit]

See also[edit]

Other representations of 1:


English[edit]

Pronunciation[edit]

Symbol[edit]

1

  1. 1.
  2. (Internet slang, leetspeak, sarcastic) Deliberate misspelling of !, imitating noobs who forget to hold down 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

Derived terms[edit]

  • (ordinal) 1st

Synonyms[edit]

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

American Sign Language[edit]

Numeral[edit]

1

  1. one

Noun[edit]

1

  1. A metasyntactic variable used to denote a person.