noun
- a hypothetical elementary particle that is electrically neutral and has very small mass
Usage: physics
Examples
- Scientists are searching for evidence of axions in dark matter experiments.
- The axion was first proposed to solve a problem in quantum chromodynamics.
- Researchers use sensitive detectors to hunt for axions from the sun.
- If axions exist, they could help explain the mystery of dark matter.
- The axion’s properties make it extremely difficult to detect directly.