nanometer

noun

nano·​me·​ter ˈna-nə-ˌmē-tər How to pronounce nanometer (audio)
: one billionth of a meter

Examples of nanometer in a Sentence

Recent Examples on the Web
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The reason the research team believes Ryugu was bombarded by micrometeorites is due to a fine layer of sodium, just 10 nanometers thick, on the surface of the asteroid's fragments. Robert Lea, Space.com, 24 Apr. 2026 This stable beam successfully powered an FEL for more than eight continuous hours, generating light at a wavelength of 420 nanometers—within the visible range. Rupendra Brahambhatt, Interesting Engineering, 19 Apr. 2026 Taiwan Semiconductor Manufacturing Company’s fab in Arizona produces four-nanometer chips; the cutting edge two-nanometer process exists only in Taiwan. Eyck Freymann, Time, 17 Apr. 2026 Meanwhile, the company said advanced chips, defined as 7-nanometer or smaller, made up about 74% of TSMC's total wafer revenue in the quarter. Dylan Butts, CNBC, 16 Apr. 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 1 May. 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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