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 …

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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 …

100 Symbols Names in English @ – At symbol # – Hashtag & – Ampersand $ – Dollar sign % – Percent sign ^ – Caret & – And sign * – Asterisk ( ) – Parentheses { } – Curly braces [ ] – Square brackets < > …

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 …

The number sign is the formal name for the symbol # in typography and standards such as Unicode, where it is officially designated U+0023 NUMBER SIGN (pronounced /ˈnʌmbər saɪn/) and used to …

Meaning: The hashtag symbol or # is called a "hashtag" on Twitter because it marks keywords or topics, grouping them for easy search and discovery. The word "hashtag" combines "hash" (the # symbol, …

Apr 11, 2022 · What is a pound symbol? The pound symbol (#), also known by many other names that include pound sign, number sign, hash mark, and hashtag, is a typographical symbol that is rarely …

Number sign is a name for the symbol #, which is used for a variety of purposes, including the designation of a number (for example, "#1" stands for "number one").

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.