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octothorpe
[ ok-tuh-thawrp ]
noun
- a symbol (#) used for numerous purposes, such as before a hashtag, for representing “pound” or “pounds” as a unit of weight or mass, for representing “number” or “numbered,” or as a proofreader's symbol used to indicate the need to insert space: hash mark ( def 2 ), pound sign ( def ).
Any text following an octothorpe (#) is treated as a comment and ignored.
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Word History and Origins
Origin of octothorpe1
First recorded in 1970–75; octo- ( def ), after the eight endpoints on the perimeter of the symbol, plus a second element of disputed origin
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