cinder
Americannoun
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a partially or mostly burned piece of coal, wood, etc.
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cinders,
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any residue of combustion; ashes.
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Geology. coarse scoriae erupted by volcanoes.
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a live, flameless coal; ember.
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Metallurgy.
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slag.
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a mixture of ashes and slag.
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verb (used with object)
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to spread cinders on.
The highway department salted and cindered the icy roads.
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Archaic. to reduce to cinders.
verb (used without object)
noun
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a piece of incombustible material left after the combustion of coal, coke, etc; clinker
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a piece of charred material that burns without flames; ember
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Also called: sinter. any solid waste from smelting or refining
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(plural) fragments of volcanic lava; scoriae
verb
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of cinder
before 900; Middle English synder, Old English sinder slag; cognate with German Sinter, Old Norse sindr; c- (for s- ) < French cendre ashes
Explanation
A cinder is a small, hot, glowing coal from a fire. When you put out a campfire, it's important to make sure that not one single cinder remains. It's easy to miss the fact that a cinder is still hot, since it remains that way long after every flame has been extinguished. When people clean out their wood stoves, they put the ashes in a metal bucket — rather than a flammable paper bag, for example — in case there are hot cinders hidden inside them. The word cinder comes from the Old English sinder, or "slag." The c comes from the otherwise unrelated French cendre, "ashes."
Vocabulary lists containing cinder
Earth Science - Middle School
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Tears of a Tiger
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Earth Science - High School
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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.
See Examples For:
The bear was eventually hit with a dart and fell asleep on top of a cinder block wall dividing two properties, its body straddling either side.
From Los Angeles Times ● May 4, 2026
“The industry was created 60 or 70 years ago with chicken wire and cinder blocks,” he says.
From The Wall Street Journal ● Apr. 15, 2026
Beneath moss-covered cinder blocks, dilapidated stone markers, and a handful of headstones, more than 200 children who died in state custody between the 1870s and 1930s are buried.
From Slate ● Mar. 30, 2026
He has stacked some cinder blocks to anchor iron rods for holding up a sheet, which is meant to serve as a roof.
From Barron's ● Oct. 16, 2025
Coach Warner ducked into his office beneath the bleachers and came out with a board and a pair of cinder blocks.
From "Tangerine" by Edward Bloor
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When he was about Theodore’s age, Read lost his grandmother in a fire and has long been haunted by the memory of walking through her house in cinders.
From Los Angeles Times ● Dec. 3, 2025
"I've been relieved from the burden of my stuff because it's all in cinders."
From BBC ● Jan. 10, 2025
Burning characters to cinders does little but to flatten colonialism into a fiery spectacle.
From Salon ● Mar. 3, 2024
Leonard tried but couldn’t leave Lahaina in his Jeep, so he scrambled to the ocean and hid behind the seawall for hours, dodging hot ash and cinders blowing everywhere.
From Seattle Times ● Aug. 11, 2023
I told him about the cinders hitting my back, the smell of hot creosote, and the huge roar as the train straddled the rails above me.
From "Cold Sassy Tree" by Olive Ann Burns
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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.