planetology

noun
plan·​et·​ol·​o·​gy | \ ˌpla-nə-ˈtä-lə-jē How to pronounce planetology (audio) \
plural planetologies

Definition of planetology

: a branch of astronomy that deals with the condensed matter of the solar system and especially with the planets and their moons

Other Words from planetology

planetological \ ˌpla-​nə-​tə-​ˈlä-​ji-​kəl How to pronounce planetology (audio) \ adjective
planetologist \ ˌpla-​nə-​ˈtä-​lə-​jist How to pronounce planetology (audio) \ noun

First Known Use of planetology

1865, in the meaning defined above

Keep scrolling for more

Learn More about planetology

Time Traveler for planetology

Time Traveler

The first known use of planetology was in 1865

See more words from the same year

Statistics for planetology

Cite this Entry

“Planetology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/planetology. Accessed 15 Apr. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Comments on planetology

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

WORD OF THE DAY

Test Your Vocabulary

The Exceptions Quiz III

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

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!