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.
Reviewers report using the cot where air mattresses most likely wouldn’t do the trick, such as wet ground, sand, and even a bed of lava rock in Hawaii. Olivia Young, Travel + Leisure, 24 July 2025 The formations were created billions of years ago when ancient lava flows flooded a network of gigantic impact basins left behind by cataclysmic asteroid strikes, which later hardened to renew the lunar surface. Anthony Wood, Space.com, 22 July 2025 Dillon Falls is one of numerous waterfalls in central Oregon, many of which were formed by lava flows, according to the region's tourist information center. Thao Nguyen, USA Today, 21 July 2025 The airport is running as normal with no major delays or cancelations reported despite the lava flows. Hannah Parry, MSNBC Newsweek, 16 July 2025 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 29 Jul. 2025.

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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