lava

noun

la·​va ˈlä-və How to pronounce lava (audio) ˈla- How to pronounce lava (audio)
: molten rock that issues from a volcano or from a fissure in the surface of a planet (such as earth) or moon
also : such rock that has cooled and hardened
lavalike adjective

Examples of lava in a Sentence

a flow of molten lava
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Ironically, the same molten lava that once devastated the island has both built it back up and kept these dwellings cool. Abby Montanez, Robb Report, 8 Feb. 2026 The solution to the lava PDE, for instance, describes its temperature at every point, given some initial conditions. Quanta Magazine, 6 Feb. 2026 The world is home to gigantic storms bigger than Australia, 100-mph winds pummeling its northern reaches and a rocky moon named Io orbiting it that is notoriously riddled with lava-spewing volcanoes. Eric Lagatta, USA Today, 5 Feb. 2026 Within the hill was a series of lava tubes. Jasmin 'iolani Hakes, Literary Hub, 5 Feb. 2026 See All Example Sentences for lava

Word History

Etymology

Italian, ultimately from Latin labes fall; akin to Latin labi to slide — more at sleep

First Known Use

1759, in the meaning defined above

Time Traveler
The first known use of lava was in 1759

Cite this Entry

“Lava.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lava. Accessed 10 Feb. 2026.

Kids Definition

lava

noun
la·​va ˈläv-ə How to pronounce lava (audio) ˈlav- How to pronounce lava (audio)
: melted rock coming from a volcano
also : such rock that has cooled and hardened

More from Merriam-Webster on lava

Last Updated: - Updated example sentences
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