plan·​et·​ol·​o·​gy ˌpla-nə-ˈtä-lə-jē How to pronounce planetology (audio)
plural planetologies
: a branch of astronomy that deals with the condensed matter of the solar system and especially with the planets and their moons
planetological adjective
planetologist noun

Examples of planetology in a Sentence

Recent Examples on the Web As pictures and chemical readings start streaming in, Bell and other mission scientists will begin their comparative planetology. Corey S Powell, Discover Magazine, 14 May 2014

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'planetology.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1865, in the meaning defined above

Time Traveler
The first known use of planetology was in 1865

Dictionary Entries Near planetology

Cite this Entry

“Planetology.” Dictionary, Merriam-Webster, Accessed 16 Apr. 2024.

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