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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Red light at a wavelength of roughly 620–700 nanometers penetrates superficially and targets collagen remodeling and inflammation. Jesse Pines, Forbes.com, 28 May 2026 Interestingly, these crystals are 110–200-nanometer-thin films of iron germanium whose mirror-image structure naturally forces magnetic spins into unique arrangements. Mrigakshi Dixit, Interesting Engineering, 26 May 2026 For perspective, a human hair is typically around 80,000 to 100,000 nanometers thick. New Atlas, 26 May 2026 The nanometer measure is used to indicate the size of transistors on a chip. Bloomberg, Fortune, 25 May 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 31 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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