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.
York has weaponized those 2 inches, in turn, into a kind of white-hot lava that his peers at Temple High and Texas A&M have never quite seen before. Luca Evans, Denver Post, 8 May 2026 Today, scientists scoop up lava or ash, fresh or ancient, around volcanoes — both during an eruption and in the interregnum between them — to identify subtle changes in chemical makeup. Quanta Magazine, 8 May 2026 Following months of earthquakes and eruptions, a lava dome collapsed on Mount Unzen in Japan. USA Today, 6 May 2026 The surrounding landscape was shaped by lava flows and erosion over millions of years, according to interpretive information posted throughout the park. Corey Schmidt, Sacbee.com, 6 May 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 12 May. 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

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