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.
The team’s survey was the first time Ziegler’s bent-toed geckos had been found in lava caves, the study said. Aspen Pflughoeft, Miami Herald, 29 Sep. 2025 Craters of the Moon National Monument in Idaho Like its name suggests, Craters of the Moon National Monument feels otherworldly with its landscapes of lava flows and cinder cones. Kathleen Wong, USA Today, 26 Sep. 2025 Dome volcanoes are formed from very slow, gradual eruptions of highly viscous, thick lava. Outside, 24 Sep. 2025 Newberry National Volcanic Monument Exploring Oregon's volcanic past—from caldera lakes to obsidian flows and lava tubes—is a must when visiting the state. Lauren Jones, Travel + Leisure, 20 Sep. 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 7 Oct. 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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