he·​lio·​seis·​mol·​o·​gy ˌhē-lē-ō-sīz-ˈmä-lə-jē How to pronounce helioseismology (audio)
: the study of vibrations in the material that makes up the Sun
Scientists have discovered that the sun is vibrating, and they can detect this “global oscillation” using the new techniques of “helioseismology,” which are similar to those used in terrestrial seismology.Madeleine Jacobs, Chicago Tribune, 29 Dec. 1985

Word History

First Known Use

1979, in the meaning defined above

Time Traveler
The first known use of helioseismology was in 1979

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Cite this Entry

“Helioseismology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/helioseismology. Accessed 5 Feb. 2023.

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