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nanoparticle
Wiktionary
nanoparticle

n. any microscopic particle less than about 100 nanometers (nm) in diameter. In aerosol science, the term is often reserved for particles less than 50 nm in diameter; the term "ultrafine particles" is used for particles less than 100 nm in diameter.

Wikipedia
Nanoparticle

Nanoparticles are particles between 1 and 100 nanometers in size. In nanotechnology, a particle is defined as a small object that behaves as a whole unit with respect to its transport and properties. Particles are further classified according to diameter. Ultrafine particles are the same as nanoparticles and between 1 and 100 nanometers in size, fine particles are sized between 100 and 2,500 nanometers, and coarse particles cover a range between 2,500 and 10,000 nanometers. Scientific research on nanoparticles is intense as they have many potential applications in medicine, optics, and electronics. The U.S. National Nanotechnology Initiative offers government funding focused on nanoparticle research.

Usage examples of "nanoparticle".

Joshua had drawn up the specs for a self-replicating nanoparticle emissions generator.

Kelly bolts securing a metal panel over the injectors that controlled the nanoparticle plasma stream.

The nanoparticles in the cloud had to be endowed with a rudimentary intelligence, so that they could interact with each other to form a flock that wheeled in the air.

And all the time, we watched the black nanoparticles as they came hissing into the room through cracks in doors and windows.

At my feet, I saw the nanoparticles begin to come into the room like black steam.

She checked the ratio of the influx of nanoparticles across the series of prismatic grids.