micrometeorite
/ˌmaɪkroʊˈmitiəˌraɪt/
noun
- A very small meteorite or particle of space dust that has fallen to Earth's surface.
- The museum displayed a micrometeorite under a microscope for visitors to see.
- Collecting micrometeorites from the rooftop is a fun science project.
- Micrometeorites are often found in ocean sediments and polar ice.