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earth science

American  

noun

  1. any of various sciences, as geography, geology, or meteorology, that deal with the earth, its composition, or any of its changing aspects.

earth science British  

noun

  1. any of various sciences, such as geology, geography, and geomorphology, that are concerned with the structure, age, and other aspects of the earth

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
earth science Scientific  

  1. Any of several sciences, such as geology, oceanography, and meteorology, that study the origin, composition, and physical features of the Earth.

Other Word Forms

Etymology

Origin of earth science

First recorded in 1935–40

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“It’s spontaneous combustion,” said James Boles, a professor emeritus with UC Santa Barbara’s Earth Science Department.

From Los Angeles Times • Apr. 24, 2026

UC Santa Barbara Earth Science Emeritus Professor James Kennett and his colleagues argue that these powerful events deserve far more scientific attention.

From Science Daily • Dec. 19, 2025

Today Abramoff does this through her work at the Wintergreen Earth Science based in Kennebunk, Maine.

From Salon • Jan. 3, 2025

Jack Kaye, the associate director of research at NASA’s Earth Science Division, acknowledged researchers’ concerns about the end of the sounder.

From New York Times • May 3, 2024

It tasted like the Earth Science room smelled—like metal and dirt.

From "The Miseducation of Cameron Post" by emily m. danforth

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.