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

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.
Subject to permitting, regulatory authorizations and financing, synthetic AAM production at the Ohio facility is expected to commence in the fourth quarter of 2027, with natural graphite production at Graphite Creek targeted for 2029. Maria Mocerino, Interesting Engineering, 18 July 2026 Zimbabwe has tightened controls on lithium, Mozambique now requires more graphite to be processed domestically, and Gabon plans to halt raw manganese exports later this decade. Yinka Adegoke, semafor.com, 17 July 2026 This 100 percent Chardonnay has aromas of citrus blossoms, lemon zest, and graphite. Mike Desimone, Robb Report, 17 July 2026 While a graphite rod in the same weight would work perfectly fine, a fiberglass rod does two useful things. Joe Cermele, Outdoor Life, 9 July 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

Browse Nearby Words

Cite this Entry

“Graphite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/graphite. Accessed 2 Aug. 2026.

Kids Definition

: a soft shiny black carbon that is used in making lead pencils and as a dry lubricant

Medical Definition

: 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

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