atomic pile
nounUK /əˈtɒmɪk paɪl/
US /əˈtɑːmɪk paɪl/
A big machine that makes heat and power from atoms.
The scientists built an atomic pile to make electricity.
OTHER MEANINGS
2. An early type of nuclear reactor built from stacked blocks of graphite and uranium.
The first atomic pile was assembled under the stadium stands.
3. A source of great energy or power that builds up over time.
Her ideas became an atomic pile of creativity.
4. A heap or stack of atomic materials arranged for a controlled reaction.
Engineers checked the atomic pile for heat.