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nanoparticle

American  
[nan-oh-pahr-ti-kuhl, ney-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:

The improvement held true across different delivery methods -- intramuscular, intratracheal, and intravenous -- and worked regardless of the specific nanoparticle design or genetic material being delivered.

From Science Daily Apr. 20, 2026

The lawsuit stemmed from patents on lipid nanoparticle technology used in Moderna’s Covid-19 vaccine, with analysts viewing the settlement as manageable.

From Barron's Mar. 4, 2026

Each nanoparticle included a lipid core, immune activating DNA and a short fragment of an HPV protein already present in tumor cells.

From Science Daily Feb. 18, 2026

Initial experiments with simple nanoparticle solutions showed that the system could reach femtomolar sensitivity.

From Science Daily Dec. 23, 2025

While lonvo-z uses the same lipid nanoparticle wrapper as nex-z, it targets a different gene.

From Barron's Nov. 7, 2025

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