A hashtag is a word or phrase preceded by the hash symbol (#), used on social media platforms to categorize content and make it discoverable by users interested in a specific topic. It turns the word or phrase into a clickable link that leads to a feed of other posts using the same hashtag.
Hashtags are commonly used on platforms like Twitter, Instagram, and Facebook to create conversations around particular themes, events, or trends. They facilitate content discovery and increase the visibility of posts.