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== Translingual == === Symbol === # (English symbol name number sign or hash or pound sign or octothorpe) (computing) The hash character. (Internet) A hashtag, which is a metadata tag for use in microblogging and social network services, used to label and search content. (cartography) Used to denote a village. (chess notation) Used to denote checkmate. Synonym: ++ (medicine, shorthand) Used to denote a bone fracture. #NOF ― fractured neck of femur (mathematics, computer science) Used to indicate string concatenation. 1 # 2 = 12 {\displaystyle 1\#2=12} (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. (mathematics) Primorial. Coordinate term: ! (“factorial”) 12 # = 2 × 3 × 5 × 7 × 11 = 2310 {\displaystyle 12\#=2\times 3\times 5\times 7\times 11=2310} (set theory) The cardinality of a set. # { 5 , 3 , 7 , 11 } = 4 {\displaystyle \#\{5,3,7,11\}=4} Synonyms: card, | | (linguistics) Used to indicate that a sentence is grammatical but semantically strange. (phonology) Used to indicate a word boundary. d → t / _# ― /d/ devoices to [t] before a word boundary (sign language linguistics) Used to indicate a lexicalized sign. (Usenet) Used to pad the left side of a quotation from a manual or official source. Coordinate term: > (programming) Used to indicate a hexadecimal color code. Alternative form of ‡ Alternative form of ⌗ (“key available on telephone keypads”) (music) Alternative form of ♯ (“sharp”). ==== Derived terms ==== == English == === Etymology === Derived from the abbreviation lb for Latin libra (“pound”), via the medieval convention of indicating abbreviations with a bar, ℔. === Pronuciation === The pronunciation is usually that of its meaning; see pound, number and hashtag. === Noun === # (plural # or #s) (US) Pound (unit of weight). 3# ― three pounds (attributive, precedes a numeral) Number. Synonym: no. #3 ― number three (Internet slang, text messaging) Number. (informal, preceding a phrase) Hashtag. (Scrabble) In English-language Scrabble, indicates that a word is only found in the British accepted word list and not the North American list. ==== Related terms ==== £ === Further reading === Number sign on Wikipedia.Wikipedia == Chinese == === Alternative forms === (superscript) # === Pronunciation === === Noun === # (Mainland China) alternative form of 號 / 号 (“number”), used after a numeral.