Nanoparticle

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Any microscopic particle less than about 100 nanometers (nm) in diameter.

    "Nanoparticles of various sorts are already found in products like sunscreen, paint and inkjet paper. More exotic varieties offer promise in medicine for sensitive diagnostic tests and novel treatments: the detection of Alzheimer's disease by finding a protein in spinal fluid, for instance, or nanoparticles that heat up and kill cancer cells."

Synonyms

All synonyms
ultrafine particleultrafine particle

Example

More examples

"The ingredients in this thermoelectric recipe include carbon nanotubes, polymers and a carbon material called graphene, which is a nanoparticle."

Etymology

From nano- + particle.

Related phrases

quantum dotultrafine particle

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.