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.
Hydrogen in a gas cloud, for example, emits light at very specific wavelengths, though generally most is at 656 nanometers (in the red part of the spectrum). Phil Plait, Scientific American, 13 Mar. 2025 Lithography systems in the 1980s used mercury lamps that radiated at wavelengths of 436 nanometers (violet light) and eventually 365 nm (near-ultraviolet). Jayson Stewart, IEEE Spectrum, 5 Mar. 2025 In the present study, heating the scented wax contributed significantly to the number of new particles formed in the indoor air, particularly those smaller than 100 nanometers (nm). New Atlas, 16 Feb. 2025 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 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 23 Mar. 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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!