geo·​log·​ic | \ ˌjē-ə-ˈlä-jik How to pronounce geologic (audio) \
variants: or geological \ ˌjē-​ə-​ˈlä-​ji-​kəl How to pronounce geological (audio) \

Definition of geologic

: of, relating to, or based on geology

Keep scrolling for more

Other Words from geologic

geologically \ ˌjē-​ə-​ˈlä-​ji-​k(ə-​)lē How to pronounce geologically (audio) \ adverb

Examples of geologic in a Sentence

Recent Examples on the Web

The outback has the right geologic recipe for opal to form near the edges of an ancient inland sea. Ashley Strickland, CNN, "Dinosaur bones shimmering with opal reveal a new species," 4 June 2019 Earth's kerogen was formed when geologic forces compressed the ancient remains of algae and similar critters. Paul Voosen, Science | AAAS, "NASA rover hits organic pay dirt on Mars," 7 June 2018 Now the case is once again back in the news, thanks to Richard Ash, a geologist at the University of Maryland, College Park who specializes in analyzing trace elements in geologic samples. Jennifer Ouellette, Ars Technica, "Study brings us one step closer to solving 1994 thallium poisoning case," 25 Dec. 2018 The salt, excavated by an international team led by Russian scientists, is about a billion years older than other, similar geologic samples. Nola Taylor Redd, Scientific American, "Primeval Salt Shakes Up Ideas on How the Atmosphere Got Its Oxygen," 22 Mar. 2018 The caves are the result of natural geologic processes taking place over thousands (or hundreds of thousands) of years. Jennifer Ouellette, Ars Technica, "Cave acoustics can help sculpt more realistic sounds in digital space," 14 Nov. 2018 Child of Krakatau,’’ is the geologic offspring of the infamous Krakatau volcano, better known as Krakatoa, which was obliterated in a massive eruption in 1883 and caused the deaths of some 36,000 people. I Made Sentana, WSJ, "Rain Slows Search for Tsunami Dead, as Indonesia Recalls 2004 Disaster," 26 Dec. 2018 There’s a sizable oil industry because of the Eagle Ford shale, a nearby geologic formation rich in petroleum. Patrick Sisson, Curbed, "San Antonio, the nation’s fastest-growing city, sees downtown rebound," 23 Oct. 2018 While the broader trend of warmer temperatures and receding glaciers holds just as true today as 11,700 years ago, there are other changes in the geologic record. Avery Thompson, Popular Mechanics, "According to Geologists, We're Living In a New Age," 18 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'geologic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of geologic

1791, in the meaning defined above

History and Etymology for geologic

see geology

Keep scrolling for more

Learn More about geologic

Statistics for geologic

Last Updated

14 Jun 2019

Look-up Popularity

Time Traveler for geologic

The first known use of geologic was in 1791

See more words from the same year

Keep scrolling for more

More Definitions for geologic


geo·​log·​ic | \ ˌjē-ə-ˈlä-jik How to pronounce geologic (audio) \
variants: or geological \ -​ji-​kəl \

Kids Definition of geologic

: of or relating to geology geologic formations

Keep scrolling for more

More from Merriam-Webster on geologic

Rhyming Dictionary: Words that rhyme with geologic

Spanish Central: Translation of geologic

Nglish: Translation of geologic for Spanish Speakers

Britannica English: Translation of geologic for Arabic Speakers

Comments on geologic

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


showing great care, attention, and effort

Get Word of the Day daily email!

Test Your Vocabulary

Finance Words Quiz

  • a-piggy-bank
  • The etymology of mortgage is related most closely to which two words?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Syn City

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

Love words? Need even more definitions?

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