chemiluminescence
/ˌkɛmɪˌlumɪˈnɛsəns/
noun
- The production of light by a chemical reaction without heat.
- The blue light in a glow stick comes from chemiluminescence when you crack it.
- The glow of a firefly is a natural example of chemiluminescence.
- Scientists use chemiluminescence to detect tiny amounts of substances in a sample.