Unsupported titles/`num`

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#︎ #️
Text style is forced with ⟨︎⟩ and emoji style with ⟨️⟩.
also #
# U+0023, #
NUMBER SIGN
"
[U+0022]
Basic Latin $
[U+0024]

Translingual

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A # used on a telephone keypad

Symbol

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# (English symbol name number sign or hash or pound sign or octothorpe)

  1. (computing) The hash character.
  2. (Internet) A hashtag, which is a metadata tag for use in microblogging and social network services, used to label and search content.
  3. (cartography) Used to denote a village.
  4. (chess notation) Used to denote checkmate.
    Synonym: ++
  5. (medicine, shorthand) Used to denote a bone fracture.
    #NOFfractured neck of femur
  6. (mathematics, computer science) Used to indicate string concatenation.
  7. (mathematics) Apartness, a binary relation such that if a#b, then any other element c is apart from at least one of a,b. See apartness relation.
  8. (mathematics) Primorial.
    Coordinate term: ! (factorial)
  9. (set theory) The cardinality of a set.
    Synonyms: card, | |
  10. (linguistics) Used to indicate that a sentence is grammatical but semantically strange.
    #Jane is a great hostess and John is too.
    #I slept a wink last night.
    #Colorless green ideas sleep furiously.
  11. (phonology) Used to indicate a word boundary.
    d → t / _#/d/ devoices to [t] before a word boundary
  12. (sign language linguistics) Used to indicate a lexicalized sign.
  13. (Usenet) Used to pad the left side of a quotation from a manual or official source.
    Coordinate term: >
  14. Alternative form of .
  15. Alternative form of (key available on telephone keypads).
  16. (music) Alternative form of (sharp).

Derived terms

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English

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Etymology

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Derived from the abbreviation lb for Latin libra (pound), via the medieval convention of indicating abbreviations with a bar, .

Noun

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# (plural # or #s)

  1. (US, food packaging) Pound (unit of weight).
    3#three pounds
  2. (attributive, precedes a numeral) Number.
    Synonym: no.
    #3number three
  3. (Internet slang, text messaging) Number.
    • 1986 December 14, Ben Robbins, “Operator Denies Request For Gay Phone #”, in Gay Community News, volume 14, number 22, page 2:
    • 1997 June 17, RYankowski [username], “Why collect new U.S.?”, in rec.collecting.stamps[1] (Usenet):
      I have collected U.S. Stamps since I was a boy back in the 1950's. At that time there was a low # being printed and it was affordable.
  4. (Scrabble) In English-language Scrabble, indicates that a word is only found in the British accepted word list and not the North American list.
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Further reading

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Chinese

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Alternative forms

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  • (superscript) #

Pronunciation

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Noun

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#

  1. (Mainland China) Alternative form of (number), used after a numeral.