hash·​tag | \ˈhash-ˌtag \

Definition of hashtag 

: a word or phrase preceded by the symbol # that classifies or categorizes the accompanying text (such as a tweet)

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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

Tweeting with the hashtag #StandingWithMonicaOsagie, many expressed anger at the university, which forced authorities to respond to her allegations. Bukola Adebayo And Stephanie Busari, CNN, "Lecturer asked her to trade sex for better grades, Nigerian student says," 23 May 2018 This week, shortly after Donald Trump announced his nominee for the Supreme Court seat left vacant by the retirement of Anthony Kennedy, a joking hashtag began trending on Twitter. Megan Garber, The Atlantic, "Brett Kavanaugh, Jim Jordan, and the Fog of the Partisan," 13 July 2018 The hashtag #SelenaIsFreeParty popped up shortly after news broke that ex-boyfriend Justin Bieber was engaged to on-again, off-again fling Hailey Baldwin. Kathryn Lindsay, refinery29.com, "Why Be Engaged When You Can Be An Ex?," 13 July 2018 Several women have posted videos of themselves dancing, with the hashtag #Dancing_isn’t_a_crime. Katherine Lam, Fox News, "Iranian woman arrested after posting Instagram video of her dancing, prompting outrage among users," 10 July 2018 On social media, hashtags such as #AMLOVE have been trending, reflecting a kind of collective euphoria normally not associated with Mexican politicians. Patrick J. Mcdonnell, latimes.com, "Once denounced as a political threat, Lopez Obrador is now the darling of Mexico," 10 July 2018 With hashtags that translate as #dance to freedom and #dancing_isn’t_a_crime, Iranian women, many also without the mandatory hijab, have started posting their own videos in support of Hojabri. Laignee Barron, Time, "Women in Iran Are Dancing to Protest the Arrest of a Teenage Instagrammer," 9 July 2018 Several Twitter users promised to help look for the toy at Logan, and the hashtag #BringHornzyHome was created. J.d. Capelouto, BostonGlobe.com, "The search for ‘Hornzy Twigs’: Tweet over stuffed animal lost in Logan Airport goes viral," 9 July 2018 Calls for his release using the hashtag #freeariel spread on social media, an unusual occurrence in a country where many Cubans often worry about publicly challenging the government. Nelson Acosta And Sarah Marsh, The Christian Science Monitor, "Cuba releases environmental activist on parole after hunger strike," 5 July 2018

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

10 Nov 2018

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Time Traveler for hashtag

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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