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 first simulation produced ice that was not purely amorphous, but was up to 20% crystalline, with the ice crystals measuring just 3 nanometers across and embedding into the disordered gaps within the amorphous ices' structure. Keith Cooper, Space.com, 9 July 2025 Once these clumps grow to about 50 nanometers (roughly the diameter of a virus) moisture condenses around them into cloud droplets. Max G. Levy, Smithsonian Magazine, 26 June 2025 According to the study, SNAP-X is packed with ultra-tiny silica capsules, each smaller than 70 nanometers (for comparison, the average human hair is 80,000-100,000 nanometers wide). Jenny Lehmann, Discover Magazine, 16 May 2025 Ars Video Non-stick surfaces The process of fabricating ultra-thin films (between one and a few tens of nanometers) made of various materials is called epitaxy and is used in manufacturing chips and two-dimensional semiconductors. ArsTechnica, 1 May 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

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Cite this Entry

“Nanometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nanometer. Accessed 17 Jul. 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

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