helioseismology

noun

he·​lio·​seis·​mol·​o·​gy ˌhē-lē-ō-sīz-ˈmä-lə-jē 

-sīs-

: 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

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now

Rhymes for helioseismology

• bacteriology
• biotechnology
• dialectology
• ecclesiology
• endocrinology
• epistemology
• geochronology
• geomorphology
• histopathology
• hydrogeology
• kinesiology
• meteorology