1. Extremely small particles of matter, typically between 1 and 100 nanometers in size, used in medicine, electronics, and materials science.
Usage: Usually used in plural form; Technical/scientific term; Commonly used in nanotechnology and materials science contexts

Examples

• Researchers are developing nanoparticles that can deliver medicine directly to cancer cells.
• Gold nanoparticles are used in some diagnostic tests to detect diseases.
• The new coating contains silver nanoparticles that kill bacteria on surfaces.
• Scientists study how nanoparticles interact with living tissue.
• Nanoparticles are so small they can pass through cell membranes.
• The company manufactures nanoparticles for use in electronics and solar panels.