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 town of Hilo is home to Wailuku River State Park, which is famous for the rainbows that are created from the mist of Waianuenue waterfalls (Rainbow Falls) and the Boiling Pots lava rock pools set along the river. Evie Carrick, Travel + Leisure, 7 Mar. 2026 Desserts go big too, from Valrhona chocolate lava (making a nostalgic return to menus as of late) to a towering four-layer carrot cake. Brock Keeling, Oc Register, 6 Mar. 2026 Tang Chhin, meanwhile, took a photo of the waning partial phase of the eclipse, as Earth's curved shadow slipped from the lunar disk, revealing the ancient lava plains of Mare Imbrium, Procellarum, Nubium and Humorum. Anthony Wood, Space.com, 4 Mar. 2026 During one June episode, lava fountains soared more than 1,000 feet into the air, according to officials. Stepheny Price, FOXNews.com, 4 Mar. 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 11 Mar. 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
Love words? Need even more definitions?

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

More from Merriam-Webster