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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
For comparison, a strand of human hair would typically be around 90,000 nanometers in diameter—some 225 times thicker. Anders Fogh Rasmussen, Newsweek, 5 Feb. 2025 Most of the plastics the scientists found in brain, kidney and liver tissue were extremely small, less than 200 nanometers. Elizabeth Weise, USA TODAY, 3 Feb. 2025 Each molecule is only about 0.4 nanometers, or 16 billionths of an inch. Daniel Freedman, The Conversation, 20 Jan. 2025 Some devices emit blue light, usually between 400 to 490 nanometers. Melinda Wenner Moyer, New York Times, 20 Jan. 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

Dictionary Entries Near nanometer

Cite this Entry

“Nanometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nanometer. Accessed 20 Feb. 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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