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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.

My daughter just graduated from college with a degree in earth science.

From Los Angeles Times • Jul. 24, 2025

Luisa did not have the Highers needed to study earth science so went to college to do an HNC which helped her to get into university.

From BBC • Aug. 18, 2024

In a case of medicine meets earth science, the researchers discovered that cancer cells may be made from a different assortment of hydrogen atoms than healthy tissue.

From Science Daily • May 6, 2024

The bill, meanwhile, keeps NASA’s other science divisions at nearly the same level as 2023, including $2.2 billion for its earth science portfolio.

From Science Magazine • Mar. 3, 2024

But besides a general obligation shared by geologists everywhere, and in varying degrees by perhaps all authors of recent American text- books in earth science, there is owing a debt direct and personal.

From The Elements of Geology by Norton, William Harmon

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.