pyrosphere

noun

py·​ro·​sphere
-ˌsfi(ə)r
1
: the hot central portion of the earth
2
: a hypothetical spherical zone of molten magma that is held to intervene between the crust of the earth and a solid nucleus and to supply lava to volcanoes

Word History

Etymology

International Scientific Vocabulary pyr- + sphere

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Dictionary Entries Near pyrosphere

Cite this Entry

“Pyrosphere.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pyrosphere. Accessed 29 Mar. 2024.

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