nano·​me·​ter | \ ˈna-nə-ˌmē-tər How to pronounce nanometer (audio) \

Definition of nanometer

: one billionth of a meter

Examples of nanometer in a Sentence

Recent Examples on the Web This is traditionally achieved by the use of nanometer-thin reflective layers supported by a micrometer-thick substrate that endows them with the necessary sturdiness. Caroline Delbert, Popular Mechanics, "Light Sails Will Unlock Interstellar Travel. This One Is the Most Promising Yet.," 22 Oct. 2020 SARS CoV-2 is an RNA virus of 100 nanometers in size (a nanometer is one-billionth of a meter), and this small organism has kept the world on edge and caused hundreds of thousands of deaths worldwide. Dallas News, "We each need to do our part: modeling care and leadership during the pandemic," 14 Oct. 2020 The company recently completed the production line for its latest generation 10nm (nanometer) chips. Bob O'donnell, USA TODAY, "Intel insight: CEO on U.S. manufacturing's role in driving the digital revolution," 2 Oct. 2020 For the electron in hydrogen to be excited from the ground state (lowest energy level) to the next level would require light with a 122 nanometer wavelength. Rhett Allain, Wired, "Here's How You Can 'See' Molecules—on a Whole 'Nother Planet," 26 Sep. 2020 That is roughly the power required to lift one-thousandth of a grain of salt one nanometer once a day. Quanta Magazine, "‘Zombie’ Microbes Redefine Life’s Energy Limits," 12 Aug. 2020 The researchers, from the Swiss Federal Laboratories for Materials Science and Technology (Empa), made the tiny motor, which is less than 1 nanometer in diameter. Caroline Delbert, Popular Mechanics, "The World's Tiniest Motor Is a Li'l Energy-Losing Quantum Tunnel," 25 June 2020 Yet no matter the size, from bacteriophages’ nanometer-scale tail fibers to narwhals’ two- or three-meter-long tusk, these structures tend to be long and slender cones whose base diameter is much smaller than their length. Scott Hershberger, Scientific American, "Stingers Have Achieved Optimal Pointiness, Physicists Show," 6 July 2020 The process involved slicing the brain into 20 nanometer slabs, and then continuously imaging them for months in an undisturbed environment. Gregory Barber, Wired, "The Most Complete Brain Map Ever Is Here: A Fly's 'Connectome'," 22 Jan. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nanometer.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of nanometer

1963, in the meaning defined above

History and Etymology for nanometer

International Scientific Vocabulary

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Time Traveler for nanometer

Time Traveler

The first known use of nanometer was in 1963

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Statistics for nanometer

Last Updated

12 Nov 2020

Cite this Entry

“Nanometer.” Dictionary, Merriam-Webster, Accessed 30 Nov. 2020.

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More Definitions for nanometer


variants: or chiefly British nanometre \ ˈnan-​ə-​ˌmēt-​ər How to pronounce nanometre (audio) \

Medical Definition of nanometer

: one billionth of a meter abbreviation nm

More from Merriam-Webster on nanometer

Nglish: Translation of nanometer for Spanish Speakers

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