Unsupported titles/Number sign

# U+0023, # NUMBER SIGN ← " [U+0022] Basic Latin $ → [U+0024]

﹟ U+FE5F, ﹟ SMALL NUMBER SIGN ← ﹞ [U+FE5E] Small Form Variants ﹠ → [U+FE60]

＃ U+FF03, ＃ FULLWIDTH NUMBER SIGN ← ＂ [U+FF02] Halfwidth and Fullwidth Forms ＄ → [U+FF04]

See also: ♯

Contents

TranslingualEdit

SymbolEdit

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

1. (set theory) The cardinality of a set.

   #{ 5, 3, 7, 11 } = 4

2. (computing) The hash character.
3. (Internet) A hashtag, which is a metadata tag for use in microblogging and social network services, used to label and search content.
4. (Usenet) Used to pad the left side of a quotation from a manual or official source.
5. (mathematics, computer science) concatenation
6. (Should we delete⁽⁺⁾ this sense?) (Internet) The anchor in a page.
   1. Used in URLs, links to the anchored portion of the page.

      http://www.example.com/index.html#chapter14 goes to the "chapter14" anchor in the index.html page.

   2. The ID selector in CSS, which intends to format an element that appears only once in a page.

      div#currentchaptertitle {font-weight: bold}

7. (syntax) Used to indicate that a sentence is grammatical but semantically strange.
8. (phonology) Used to indicate a word boundary.
9. Alternative form of ‡
10. (chess notation) checkmate
11. (cartography) Used to denote a village.
12. (Should we delete⁽⁺⁾ this sense?) (programming) The length operator in Lua.

SynonymsEdit

• (cardinality): card, | |

Derived termsEdit

• # #

Coordinate termsEdit

• (to pad a quotation on Usenet): > (for a quotation not necessarily from a manual or official source)

Usage notesEdit

• In English it is called the hash, number sign, pound sign (American), or octothorpe (uncommon).

SynonymsEdit

• (chess): ++

---

EnglishEdit

EtymologyEdit

The symbol # derives from the abbreviation lb for Latin libra (“pound”), via the medieval convention of indicating abbreviations with a bar, ℔.

NounEdit

# (plural # or #s)

1. (food packaging, US) Pound (unit of weight)

   3# — "three pounds"

2. (followed by a numeral: used attributively) Number

   #3 — "number three"

3. (linguistics) denotes a word or morpheme boundary

Related termsEdit

• £

SynonymsEdit

• (number): no.

See alsoEdit

• Number sign on Wikipedia.Wikipedia