vol·​ca·​nic | \ väl-ˈka-nik How to pronounce volcanic (audio) , vȯl- also -ˈkā-\

Definition of volcanic

 (Entry 1 of 2)

1a : of, relating to, or produced by a volcano
b : characterized by volcanoes a volcanic range
c : made of materials from volcanoes
2 : explosively violent : volatile volcanic emotions



Definition of volcanic (Entry 2 of 2)

: a volcanic rock

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Other Words from volcanic


volcanically \ väl-​ˈka-​ni-​k(-​ə)lē How to pronounce volcanically (audio) , vȯl-​ also  -​ˈkā-​ \ adverb

Examples of volcanic in a Sentence


a man with a volcanic temper that could go off at any moment

Recent Examples on the Web: Adjective

More than 30 Republicans joined Democrats to support the bill, which would provide more than $19 billion in aid to areas hit by wildfires, volcanic eruptions and tornadoes. Andrew Duehren, WSJ, "Disaster-Aid Bill’s Passage in House Kicks Off Next Phase of Negotiations," 10 May 2019 Long said of the reasons why New England has been almost completely free of earthquakes and volcanic eruptions for eons. Gregory B. Hladky, courant.com, "New Research Discovers Surprising Seismic Activity Under New England," 26 June 2018 Swae Lee announced the release of the video Thursday (June 21) on Twitter, as well as the duo's plans to donate all proceeds to Guatemala as the country recovers from a deadly volcanic eruption. Rita Thompson, Billboard, "Rae Sremmurd Supports Guatemala With New Music Video: Watch," 21 June 2018 For example, with the volcanic eruption in Hawaii, Twitter could alert people with a notification that would take them to the most relevant tweets, photos and live videos of the news. Selina Wang, latimes.com, "Twitter's new approach: Predict what you want to see, as it happens, and notify you," 13 June 2018 Several years after rampaging dinosaurs destroyed Jurassic Park (again), Chris Pratt and Bryce Dallas Howard return to save surviving creatures before the island is destroyed by a volcanic eruption. Gary Thompson, Philly.com, "Summer movies 2018: Here's when 'Ocean's 8,' 'Incredibles 2,' 'Jurassic World' and more hit theaters," 6 June 2018 Fuego, one of several active volcanoes out of 34 in the Central American country, is near the colonial city of Antigua, a UNESCO world heritage site that has survived several volcanic eruptions. Anchorage Daily News, "Scores dead, rescuers struggle as Guatemala volcano spews hot mud flow," 4 June 2018 Guatemalan authorities say a volcanic eruption killed at least 25 people. Jane Onyanga-omara, USA TODAY, "At least 25 killed as Guatemala's Fuego volcano erupts," 4 June 2018 Conventional diamonds are typically more than 1 billion years old, formed deep inside the Earth under extreme pressure and high temperatures, ultimately carried toward the surface by volcanic eruptions. Mike Rogoway, OregonLive.com, "Diamonds in Gresham: De Beers will build $94 million synthetic gem factory," 31 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'volcanic.' 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 volcanic


1776, in the meaning defined at sense 1a


1801, in the meaning defined above

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Statistics for volcanic

Last Updated

21 May 2019

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Time Traveler for volcanic

The first known use of volcanic was in 1776

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English Language Learners Definition of volcanic

: of, relating to, or produced by a volcano
informal : very angry or violent


vol·​ca·​nic | \ väl-ˈka-nik How to pronounce volcanic (audio) , vȯl-\

Kids Definition of volcanic

: of, relating to, or produced by a volcano volcanic ash

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More from Merriam-Webster on volcanic

Rhyming Dictionary: Words that rhyme with volcanic

Thesaurus: All synonyms and antonyms for volcanic

Spanish Central: Translation of volcanic

Nglish: Translation of volcanic for Spanish Speakers

Britannica English: Translation of volcanic for Arabic Speakers

Comments on volcanic

What made you want to look up volcanic? Please tell us where you read or heard it (including the quote, if possible).


highly pertinent or appropriate

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