air shower
Astronomy
noun
A shower of secondary cosmic rays or particles, formed in the atmosphere when primary cosmic rays collide with atomic nuclei.
Origin
1930s; earliest use found in Proceedings of the Royal Society of London.
- painfulness
- painkiller
- painkilling
- pa-in-law
- painless
- painlessly
- painlessness
- pain management
- pain pill
- pain point
- pain-proof
- pain relief
- pain reliever
- pain-relieving
- pain spot
- painstaker
- pains taker
- painstaking
- painstakingly
- painstakingness
- painsworthy
- paint
- paintability
- paintable
- paint a picture of