helioseismology

noun
he·lio·seis·mol·o·gy | \ˌhē-lē-ō-sīz-ˈmä-lə-jē, -sīs-\

Definition of helioseismology 

: 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

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

First Known Use of helioseismology

1979, in the meaning defined above

Keep scrolling for more

Learn More about helioseismology

Share helioseismology

Statistics for helioseismology

Look-up Popularity

Time Traveler for helioseismology

The first known use of helioseismology was in 1979

See more words from the same year

Comments on helioseismology

What made you want to look up helioseismology? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

lying above or upon

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Citation

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

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