plutonium
— Navneord
– Engelsk
~ a solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons; found in minute quantities in uranium ores but is usually synthesized in nuclear reactors; 13 isotopes are known with the most important being plutonium 239
plutonium bomb
— Navneord
– Engelsk
~ a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element like uranium 235 or plutonium 239)
plutonium 239
— Navneord
– Engelsk
~ a highly fissionable isotope of plutonium that is used in atomic weapons and as a reactor fuel; produced by irradiating uranium 238 with slow electrons
pluviometer
— Navneord
– Engelsk
~ gauge consisting of an instrument to measure the quantity of precipitation
Pluviose
— Navneord
– Engelsk
~ fifth month of the Revolutionary calendar (January and February); the rainy month
ply
— Navneord
– Engelsk
~ (usually in combinations) one of several layers of cloth or paper or wood as in plywood
ply
— Navneord
– Engelsk
~ one of the strands twisted together to make yarn or rope or thread; often used in combination; "three-ply cord"; "four-ply yarn"
ply
— Udsagnsord
– Engelsk
~ wield vigorously; "ply an axe"