graphite

noun

graph·​ite ˈgra-ˌfīt How to pronounce graphite (audio)
1
: a soft black lustrous form of carbon that conducts electricity and is used in lead pencils and electrolytic anodes, as a lubricant, and as a moderator in nuclear reactors
2
: a composite material in which carbon fibers are the reinforcing material
graphitic adjective

Examples of graphite in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Sodium, on the other hand, cannot be stored in graphite. Georgina Jedikovska, Interesting Engineering, 27 Jan. 2026 Market demand for minerals like graphite, cobalt, nickel and nickel is expected to increase by up to 60% by 2040, according to the International Energy Agency. Ty Roush, Forbes.com, 26 Jan. 2026 However, Greenland is rich in rare earth minerals, including neodymium, dysprosium, graphite, copper and lithium. Steven Lamy, Fortune, 22 Jan. 2026 Greenland has mineral deposits of key minerals, including graphite, copper, nickel, zinc, tungsten and lithium, all used for making modern technology. Kinsey Crowley, USA Today, 22 Jan. 2026 See All Example Sentences for graphite

Word History

Etymology

German Graphit, from Greek graphein to write

First Known Use

1796, in the meaning defined at sense 1

Time Traveler
The first known use of graphite was in 1796

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Cite this Entry

“Graphite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/graphite. Accessed 31 Jan. 2026.

Kids Definition

graphite

noun
graph·​ite ˈgraf-ˌīt How to pronounce graphite (audio)
: a soft shiny black carbon that is used in making lead pencils and as a dry lubricant

Medical Definition

graphite

noun
graph·​ite ˈgraf-ˌīt How to pronounce graphite (audio)
: carbon of a soft black lustrous form that conducts electricity and is used in lead pencils and electrolytic anodes, as a lubricant, and as a moderator in nuclear reactors

called also plumbago

graphitic adjective

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