Number sign

The symbol # is known variously in English-speaking regions as the number sign,[1] hash,[2] or pound sign.[3] The symbol has historically been used for a wide range of purposes including the designation of an ordinal number and as a ligatured abbreviation for pounds avoirdupois – having been derived from the now-rare .[4]

#
Number sign
In UnicodeU+0023 # NUMBER SIGN (#)
Different from
Different fromU+266F MUSIC SHARP SIGN
U+2317 VIEWDATA SQUARE
U+22D5 EQUAL AND PARALLEL TO
Related
See alsoU+00A3 £ POUND SIGN
U+2116 NUMERO SIGN

Since 2007, widespread usage of the symbol to introduce metadata tags on social media platforms has led to such tags being known as "hashtags",[5] and from that, the symbol itself is sometimes called a hashtag.[6]

The symbol is distinguished from similar symbols by its combination of level horizontal strokes and right-tilting vertical strokes.


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This article uses material from the Wikipedia article Number sign, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.