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- plutonium
- plutonium-238
- plutonium-239
- plutonium-240
- plutonium-241
- plutonium-242
- plutonium alloy
- plutonium and uranium recovery by extraction process
- plutonium and uranium reduction extraction process
- plutonium-beryllium neutron source
- plutonium dioxide
- plutonium metal
- plutonium nitrate
- plutonium nitride
- plutonium oxide
- plutonium production reactor
- plutonium purification cycle
- plutonyl
- pluviogram
- pluviograph
- pluviometry
- PLV
- P. L. von Seidel
- P. L. von Seidel (1821—1896)
- P. L. Wantzel