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nanometer

American  
[nan-uh-mee-ter, nay-nuh-] / ˈnæn əˌmi tər, ˈneɪ nə- /

noun

  1. one billionth of a meter. nm


nanometer Scientific  
/ năn′ə-mē′tər /
  1. One billionth (10 - 9) of a meter.


Etymology

Origin of nanometer

First recorded in 1960–65; nano- + meter 1


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How does nanometer compare to similar and commonly confused words? Explore the most common comparisons:


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

A nanometer, or 1 billionth of a meter, refers to the size of a transistor, and the smaller the size, the greater the number of transistors that can be placed on a chip.

From The Wall Street Journal ● Oct. 23, 2026

For perspective, a nanometer is one billionth of a meter.

From Science Daily ● Oct. 17, 2026

Nvidia’s coming Rubin platform, slated to ship in the third quarter, leverages TSMC’s 3 nanometer family for precisely this reason.

From Barron's ● Jun. 25, 2026

BYD unveiled the Xuanji A3, a 4 nanometer autonomous-driving chip, at its technology day in Shenzhen, China.

From The Wall Street Journal ● May 29, 2026

For comparison, a nanometer is one billionth of a meter, far smaller than anything visible to the human eye.

From Science Daily ● Mar. 31, 2026

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