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.
Most notably, in 2023 two researchers scrutinizing 30-year-old Magellan data realized that the probe had caught a volcanic eruption in the act: radar images of the volcano Maat Mons that were taken months apart showed what looked like a caldera collapse and subsequent lava flow. Elise Cutts, Scientific American, 13 May 2025 Crews from the Icelandic Department of Civil Protection and Emergency Management worked around the clock to build barriers to curtail the lava flow. Monica Cull, Discover Magazine, 9 May 2025 During Axial Seamount's last eruption in 2015, an enormous amount of magma poured out of the volcano, including one lava flow that was about 450 feet thick, according to researchers. Denise Chow, NBC news, 8 May 2025 The lava flows would have filled in any existing craters and helped to reset the ages measured by moon rocks and lunar zircons. Nola Taylor Tillman, Space.com, 8 May 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 22 May. 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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