The use of the hash symbol in a hashtag is a phenomenon conceived by Chris Messina, and popularized by social media network Twitter, as a way to direct conversations and topics …

The hash symbol originated from the Roman abbreviation lb for libra pondo (“pound in weight”). Over time, it evolved into the # symbol, known as an octothorpe or pound sign, and appeared …

Sep 21, 2025 · The number sign (#), also known as the hash symbol, pound sign, octothorpe, or hashtag, is a typographical symbol used for a variety of purposes in different contexts.

Jun 24, 2012 · The hash mark, or pound symbol, (#) is now known by social media users as a "hashtag" or "hash tag". Posts that have the same keywords prefixed with the # symbol are …

Aug 25, 2025 · The hash symbol, commonly known as the #, is a versatile character used in various contexts across digital platforms, programming languages, and everyday …

The hash symbol (#) is a widely recognized and versatile character used in diverse technology applications. It often serves as a symbol for the number sign, lattice, pound sign, or octothorpe.

In this guide, we’re going to show you how to get the hashtag symbol (#), also known as the number sign. This symbol is like a little grid and you see it everywhere, from marking numbers …

Sep 7, 2025 · Also called a hash, number sign, or pound sign, the octothorpe is the typographical symbol "#" (two horizontal lines and two vertical lines, crossed). On US QWERTY keyboards, …

Since 2007, widespread usage of the symbol to introduce metadata tags on social media platforms has led to such tags being known as "hashtags", and from that, the symbol itself is …

Jul 23, 2025 · Hashing refers to the process of generating a fixed-size output from an input of variable size using the mathematical formulas known as hash functions. This technique …