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 Celebrities and supporters have advocated for Spears on social media with the hashtag #FreeBritney. Chloe Melas, CNN, "Britney Spears' attorney files petition to remove her father from overseeing her medical decisions," 24 Mar. 2021 Long retweeted two tweets with the hashtag #StopTheSteal. Washington Post, "Republicans set to quiz tech CEOs on election misinformation tweeted #StopTheSteal themselves," 24 Mar. 2021 On Sunday, March 21, Leslie Jones live-blogged her reaction to watching the four-hour Snyder Cut with the hashtag #longassmovie. Rebecca Alter, Vulture, "Watch Justice League As Zack Snyder Intended: on Leslie Jones’s Twitter," 22 Mar. 2021 Grant recipients will celebrate on social media with the hashtag #SFS2020. Ivana Venema-nunez, The Arizona Republic, "Republic readers, others donate $2.1 million to Season for Sharing to support 176 Arizona nonprofits," 21 Mar. 2021 Earlier this week, players began tweeting with the hashtag #NotNCAAProperty to protest the association’s rules. New York Times, "Anger Erupts Over Disparities at N.C.A.A. Tournaments," 19 Mar. 2021 To enter, Entrant must post their Submission, along with the hashtag #Dundies2021Contest and tag @peacockTV. Jacob Siegal, BGR, "The entire series of ‘The Office’ is streaming free on Peacock for a week," 18 Mar. 2021 With the hashtag #NotNCAAProperty, players pushed for the association to permit college athletes to earn money for things like sponsorship deals, online endorsement and personal appearances. Ralph D. Russo, baltimoresun.com, "‘Not NCAA Property’: Basketball players push for reform on social media ahead of NCAA tournament," 17 Mar. 2021 Women are imploring leaders to take violence against women seriously, sharing their own stories and fears with the hashtag #shewaswalkinghome. Claire Zillman, Fortune, "Can Karen Lynch vaccinate America?," 15 Mar. 2021

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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The first known use of hashtag was in 2007

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Last Updated

10 Apr 2021

Cite this Entry

“Hashtag.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hashtag. Accessed 19 Apr. 2021.

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More Definitions for hashtag



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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