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

Keep scrolling for more

Other Words from volcanic


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

Examples of volcanic in a Sentence

Adjective a man with a volcanic temper that could go off at any moment
Recent Examples on the Web: Adjective The report added that people should take precautions in using water for drinking and washing vegetables as volcanic ash may have contaminated tanks. Larry Madowo, Martin Goillandeau And Sarah Dean, CNN, 29 May 2021 There’s also volcanic ash that’s rich in active enzymes, sourced from Jeju Island in South Korea, to prevent breakouts and zap excess oil. Celia Shatzman, Forbes, 29 May 2021 Once a swamp that had been blanketed in volcanic ash, the rock from the coal mine was full of fossils preserved when silica from the ash infiltrated the plants’ cells. Elizabeth Pennisi, Science | AAAS, 26 May 2021 The scene in his office reminded Frahm, in a way, of Pompeii, the city frozen in time in 79 B.C., when nearby Mount Vesuvius erupted and buried the city in volcanic ash. Washington Post, 28 Apr. 2021 Smothered under volcanic ash and rocks from the eruption of Mount Vesuvius, the ancient city of Pompeii in modern-day Italy lay buried for more than 1,500 years before it was discovered and excavations began. Lakshmi Supriya, Scientific American, 26 Mar. 2021 So far Fagradalsfjall’s eruption has not caused the kind of global disruption to air travel seen in 2010, when the subglacial volcano Eyjafjallajökull spewed volcanic ash into the high atmosphere. Robinson Meyer, The Atlantic, 23 Mar. 2021 Bentonite clay is a natural clay composed of volcanic ash. Bryony Gilbey, chicagotribune.com, 20 Mar. 2021 In 2010, a different volcano in a different part of Iceland, Eyjafjallajökull, erupted and spewed volcanic ash that spread and caused massive flight disruptions in Europe and affected travel worldwide. NBC News, 20 Mar. 2021 Recent Examples on the Web: Noun In a separate project in 2018, for example, scientists announced the discovery of a stunning volcanic ‘lost world’ off the coast of Tasmania. Fox News, 20 June 2020

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.

See More

First Known Use of volcanic


1776, in the meaning defined at sense 1a


1801, in the meaning defined above

Keep scrolling for more

Learn More about volcanic

Time Traveler for volcanic

Time Traveler

The first known use of volcanic was in 1776

See more words from the same year

Statistics for volcanic

Last Updated

14 Jun 2021

Cite this Entry

“Volcanic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/volcanic. Accessed 15 Jun. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for volcanic



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


Test Your Vocabulary

Name that Thing: Dog Breeds

Name That Thing

Test your visual vocabulary with our 10-question challenge!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!