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nanoparticle

American  
[nan-oh-pahr-ti-kuhl, nay-noh-] / ˈnæn oʊˌpɑr tɪ kəl, ˈneɪ noʊ- /

noun

  1. a microscopic particle of matter that is measured on the nanoscale, usually one that measures less than 100 nanometers.


nanoparticle British  
/ ˈnænəʊˌpɑːtɪkəl /

noun

  1. a particle with dimensions less than 100 nanometres

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of nanoparticle

First recorded in 1980–85; nano- + particle


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:

With both elevated ozone and high concentrations of terpenes present, nanoparticle production became even more intense.

From Science Daily ● Sep. 26, 2026

These compounds reacted with indoor oxidants, particularly ozone, to initiate intense nanoparticle nucleation and growth events.

From Science Daily ● Sep. 26, 2026

"In the meantime, this model serves as proof-of-concept; with this technique, we can produce a very high-performance upconversion nanoparticle that could be customized to any molecule you might want to detect. That's something entirely new."

From Science Daily ● Sep. 20, 2026

Other experimental technologies are also exploring ways to overcome this challenge, including ultrasound-based delivery systems, "brain shuttle" molecules, and additional nanoparticle platforms designed to cross the barrier more effectively.

From Science Daily ● May 17, 2026

The companies had accused Moderna of using their patented lipid nanoparticle technology—the delivery system featured in Moderna’s Spikevax Covid-19 vaccine—without permission.

From Barron's ● May 1, 2026

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