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octothorp Syllabification: oc·to·thorp
Pronunciation: /ˈäktəˌTHôrp/
(also octothorpe)

Definition of octothorp in English:


Another term for the pound sign ().
Example sentences
  • By dialing the octothorpe (#) and 44, then saying ‘Messages,’ a subscriber can retrieve voice mail.
  • This starts with an octothorpe and consists of 6 hex numbers.
  • Common names for an octothorpe include number sign, hash (most common in the UK), or pound (US standard usage).


1970s: of uncertain origin; probably from octo- (referring to the eight points on the symbol) + the surname Thorpe.

Definition of octothorp in:
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