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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Important applications in industry This is because the microstructure of the aerogel is something akin to a nanofiber network comprised of fibres around 250 nanometers thick. Christopher McFadden, Interesting Engineering, 13 Dec. 2025 Whereas reading on a tablet exposes your body to sleep-disrupting blue light, this reading light has a 670 nanometer red light bulb that actually promotes natural melatonin production. Stephanie Osmanski, Better Homes & Gardens, 8 Dec. 2025 There's just one mode but three wavelengths: (red) 633, (near-infrared) 830, and (deep near-infrared) 1072 nanometers. Boutayna Chokrane, Wired News, 21 Nov. 2025 This enables the creation of pixels that are approximately 560 nanometers across, as opposed to the five-micrometer diameter of even micro-OLED pixels. PC Magazine, 4 Nov. 2025 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 Dec. 2025.

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

More from Merriam-Webster on nanometer

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