coal seam


Definition of coal seam

: a bed of coal usually thick enough to be profitably mined

Examples of coal seam in a Sentence

Recent Examples on the Web

The method involves digging vertical pits down into a hillside, until the coal seam is reached. Krishna Pokharel, WSJ, "Divers Start Hunt for 15 Missing in Indian ‘Rathole’ Mine, Weeks After It Flooded," 30 Dec. 2018 After the coal seams were depleted the site was left flattened, carved with dirt roads and stripped of vegetation. Leslie Nemo, Scientific American, "From Defiled to Wild—Can a Spent Coal Mine Be Reborn as a Nature Conservation Center?," 11 July 2018 Recently, there has been a resurgence of severe cases of the disease in Appalachian mines, thought in part to be caused by thinner coal seams and more powerful equipment that kicks up more dust. Washington Post, "Feds: Kentucky coal mine supervisors cheated on dust samples," 11 July 2018 Then, in 1959, miners working coal seams broke through the bed of the Susquehanna river, which flowed into the caverns below like bathwater swirling down a plughole. The Economist, "Left in the lurchGlobalisation has marginalised many regions in the rich world," 21 Oct. 2017 New gas source Geologists had suspected there was methane gas buried in Australia’s vast coal seams. Rachel Pannett, WSJ, "How Energy-Rich Australia Exported Its Way Into an Energy Crisis," 10 July 2017 Many researchers believe the disease’s new intensity stems in part from the size of the coal seams being mined. Maya Wei-haas, Smithsonian, "Why Black Lung Disease Is Deadlier Than Ever Before," 16 May 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'coal seam.' 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 coal seam

1756, in the meaning defined above

Keep scrolling for more

Learn More about coal seam

Share coal seam

Statistics for coal seam

Look-up Popularity

Time Traveler for coal seam

The first known use of coal seam was in 1756

See more words from the same year

More from Merriam-Webster on coal seam

Rhyming Dictionary: Words that rhyme with coal seam Encyclopedia article about coal seam

Comments on coal seam

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


the range of authority or knowledge

Get Word of the Day daily email!

Test Your Vocabulary

Original Meanings Quiz

  • rembrandt-painting-a-young-scholar-and-his-tutor
  • Which of the following is the earliest known sense of the word awe?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!


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!