: a microscopic tube whose diameter is measured in nanometers
especially : one of pure carbon : buckytube

Examples of nanotube in a Sentence

Recent Examples on the Web
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In a hollow nanotube, these particles hit a dead end. Mrigakshi Dixit, Interesting Engineering, 23 June 2026 Boron nitride nanotubes, on the other hand, capture neutrons. Chelsea Gohd, Space.com, 1 May 2026 When metallic, these offer little resistance to electron flow along the nanotube. ArsTechnica, 23 Apr. 2026 Carbon nanotubes are textbook examples for the first generation. Dr. Samer Taha, Forbes.com, 18 June 2026 See All Example Sentences for nanotube

Word History

First Known Use

1992, in the meaning defined above

Time Traveler
The first known use of nanotube was in 1992

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Cite this Entry

“Nanotube.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nanotube. Accessed 7 Jul. 2026.

Medical Definition

: a microscopic tube whose diameter is measured in nanometers
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