nanoparticle

noun

nano·​par·​ti·​cle ˈna-nə-ˌpär-ti-kəl How to pronounce nanoparticle (audio)
ˈna-nō-
: a microscopic particle whose size is measured in nanometers

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Nanoparticles of a material usually have very different qualities from those that the material has at its ordinary scale, which is one reason why there's such excitement about the possibilities for how they might be used in future technologies. Many uses have already been developed. Aluminum nanoparticles added to rocket fuel can make the fuel burn twice as fast and release much more energy. Silicon nanoparticles are increasing the energy efficiency of solar cells by allowing the energy from ultraviolet light to be captured for the first time. Other nanoparticles are now helping prevent rust in metals, produce stronger batteries, enhance the diagnosis of cancer, and improve the filtering of water, and the number of other applications is growing fast.

Examples of nanoparticle in a Sentence

Recent Examples on the Web
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Nonviral delivery systems such as lipid nanoparticles are under intense development and may displace viral vectors in a few years. Francis Collins, WIRED, 7 Jan. 2025 Structural biologist Pamela Bjorkman at the California Institute of Technology, who has a similar nanoparticle COVID-19 vaccine in development, is more skeptical that spacing has a significant impact on vaccine’s durability. Byjon Cohen, science.org, 11 Oct. 2024 With this media, tuning the write laser frequency to match that of one of the nano-particle frequencies creates a spectral hole where the nanoparticle emission can be diminished as shown in (b) in the figure below. Thomas Coughlin, Forbes, 11 Dec. 2024 These nanoparticles reflect much of the ultraviolet light that is present in sunlight, keeping it from reaching and damaging the underlying skin. Ben Coxworth, New Atlas, 23 Dec. 2024 See all Example Sentences for nanoparticle 

Word History

First Known Use

1983, in the meaning defined above

Time Traveler
The first known use of nanoparticle was in 1983

Dictionary Entries Near nanoparticle

Cite this Entry

“Nanoparticle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nanoparticle. Accessed 30 Jan. 2025.

Medical Definition

nanoparticle

noun
nano·​par·​ti·​cle -ˌpärt-i-kəl How to pronounce nanoparticle (audio)
: a microscopic particle whose size is measured in nanometers
drugs bound to biodegradable polymeric nanoparticles

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