hash·​tag | \ ˈhash-ˌtag How to pronounce hashtag (audio) \
plural hashtags

Definition of hashtag

: a word or phrase preceded by the symbol # that classifies or categorizes the accompanying text (such as a tweet) You know a thing is really a thing these days when it has its own hashtag. And there it was last week, trending on Twitter alongside #cincodemayo and #happymothersday: #umpshow, which sprang up in the wake of some shockingly bad umpiring over the first six weeks of the major league season.— Joe Sheehan It's also true that a popular hashtag can benefit important and worthy subjects, such as the recently kidnapped Nigerian schoolgirls.— Mark Leibovich also : the symbol # as used in a hashtag

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Did You Know?

Social media has made the hashtag a ubiquitous part of Internet culture, starting with Twitter and expanding to other sites. Originally designed for categorizing posts, the hashtag can now be a tool for a supplementary coy or witty comment (e.g., #awkward). The word tag can mean "a word or phrase used for description or identification." Hash is short for hash mark, a term for what we more commonly call a pound sign (and, less commonly, an octothorp). The hash in hash mark is probably an alteration of hatch, a term for the crisscrossing of lines (as when adding shading to a drawing).

Examples of hashtag in a Sentence

Recent Examples on the Web

The protest, which has drawn public support from thousands of eateries, has its own hashtag, #Logout. New York Times, "India’s Restaurants Rebel Against Food Delivery Apps," 29 Aug. 2019 Their efforts have made the jump to American social media in the form of the hashtag #BoycottMulan, targeting not only Mulan’s lead actress but Disney and the movie as well. Allegra Frank, Vox, "How the Hong Kong protests created the #BoycottMulan campaign," 16 Aug. 2019 An echo of the Clinton hashtag implicating the president, #TrumpBodyCount, was also trending with more than 33,000 tweets early Saturday afternoon. Anchorage Daily News, "Trump retweets conspiracy post tying Clintons to Epstein’s death," 11 Aug. 2019 This led to a discussion of the best hashtag to kick off such a campaign. Dan Snierson, EW.com, "Brooklyn Nine-Nine stars pay tribute to Cheddar the corgi — and the whale from Free Willy," 20 July 2019 With her business in full force, Jasmine shared the new homes being built by her company on Instagram using her signature hashtags. Selena Barrientos, House Beautiful, "Jasmine Roth's HGTV Show 'Hidden Potential' Is Only One Reason for Her Net Worth," 17 July 2019 Volunteers help identify which creators to highlight and use a system of hashtags to steer viewers toward their channels. Jeff Green, latimes.com, "How Amazon’s Twitch protects its LGBT community from online harassment," 8 July 2019 Leave your review 👇 and share your photos with our hashtag for a chance to be regrammed. Rachel Epstein, Marie Claire, "Joanne Ramos' 'The Farm' Forces Us to Take a Complicated Look at Our Society," 1 July 2019 None of those celebrities have their own hashtag, though. Emily Farra, Vogue, "Ariana Grande Is Givenchy’s Newest Face," 10 May 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hashtag.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of hashtag

2007, in the meaning defined above

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Dictionary Entries near hashtag

hash out

hash sign



hash up



Statistics for hashtag

Last Updated

13 Oct 2019

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The first known use of hashtag was in 2007

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English Language Learners Definition of hashtag

: a word or phrase that starts with the symbol # and that briefly indicates what a message (such as a tweet) is about

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suitable to be imparted to the public

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