The standard notation for this class uses the number sign symbol, not the sharp sign from music, but it is pronounced "sharp P". More generally, the number sign may be used to denote the class of counting …

number sign, versatile symbol (#) most commonly used to preface numbers (e.g., apartment #1) but which encompasses a variety of other uses, especially to tag (or hashtag) posts and messages on …

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A hashtag is a metadata tag operator that is prefaced by the hash symbol, #. On social media, hashtags are used on microblogging and photo-sharing services–especially Twitter and Tumblr –as a form of …

The word hashtag, used to refer to the symbol (#) in Twitter, is a combination of the word hash from hash mark and the word tag, a way to mark something as belonging to a specific category.

Mar 16, 2026 · The hash symbol # (hashtag) can be typed using different key combinations depending on the keyboard type and system language. Here are the most common shortcuts to type the # …

After copying this symbol, you can paste it anywhere by pressing Ctrl and V on your keyboard. The number sign (#), also called the pound sign represents the word number in a list or a sentence. For …

Dec 17, 2025 · The number sign is the formal name for the symbol # in Unicode and typography standards. That name matters because it separates the symbol from its many informal aliases.

The number sign symbol, also frequently referred to as the "pound sign" in North America is used in programming languages as a special character.

The number sign (#) is a typographical symbol that represents the word “number” in American English and in Canada. Generally placed immediately before a number or series of digits (with no spaces), it …