nanoparticle
nounUK /ˈnænəʊˌpɑːtɪkəl/
US /ˈnænoʊˌpɑːrtɪkəl/
A nanoparticle is a tiny piece of matter so small you cannot see it.
Scientists put a nanoparticle of silver in the bandage to help it kill germs.
RELATED WORDS
OTHER MEANINGS
2. A particle with at least one dimension between 1 and 100 nanometers.
The lab measured each nanoparticle to confirm its size was under 100 nanometers.
3. A tiny engineered particle used to deliver medicine inside the body.
The nanoparticle carried the drug directly to the cancer cells.
4. A very small particle found in air pollution that can be breathed deep into the lungs.
Traffic exhaust releases nanoparticle pollution that worries city doctors.