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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For pattern hair loss, wavelengths of 630 to 800 nanometers have been reported to be effective. Maria Godoy, NPR, 13 Apr. 2026 This limitation is becoming especially acute as the industry explores sub-5-nanometer nodes in two-dimensional semiconductor systems, where material balance is critical for reliable device operation. Bojan Stojkovski, Interesting Engineering, 12 Apr. 2026 The key difference is in their wavelengths… the nanometers. Adam Hurly, Robb Report, 6 Apr. 2026 Musk has said previously that the facility would produce 2 nanometer chips. Kara Carlson, Fortune, 22 Mar. 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

Browse Nearby Words

Cite this Entry

“Nanometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nanometer. Accessed 16 Apr. 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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