: one billionth of a meter

Examples of nanometer in a Sentence

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With a layer thickness of just two nanometers – equivalent to two millionths of a millimeter – the demagnetization was around 75 percent stronger than with a 16-nanometer-thick layer. — Prabhat Ranjan Mishra, Interesting Engineering, 22 Oct. 2026 Once a dominant force in the chip manufacturing landscape, Intel hit major delays with its 7- and 10-nanometer nodes, triggering the stock's worst year ever in 2024. — Katie Tarasov, CNBC, 21 Oct. 2026 Microplastics are usually defined as particles smaller than five millimeters, while the minimum cutoff varies between 100 and 1,000 nanometers. — Jacek Krywko, ArsTechnica, 15 Oct. 2026 The typical size of quantum objects is a nanometer, or one-billionth of a meter. — Sophya Garashchuk, The Conversation, 1 Oct. 2026 See All Example Sentences for nanometer

Word History

Etymology

International Scientific Vocabulary

First Known Use

1963, in the meaning defined above

Time Traveler
The first known use of nanometer was in 1963

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Cite this Entry

“Nanometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nanometer. Accessed 27 Oct. 2026.

Kids Definition

nanometer

noun
nano·​meter
ˈnan-ə-ˌmēt-ər
: one billionth of a meter

Medical Definition

nanometer

noun
nano·​me·​ter
variants or chiefly British nanometre
: one billionth of a meter
—abbreviation nm
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