plutonium


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Related to plutonium: plutonium 239

plutonium

 (Pu) [ploo-to´ne-um]
a chemical element, atomic number 94, atomic weight 242. (See Appendix 6.)

plu·to·ni·um (Pu),

(plū-tō'nē-ŭm),
A transuranium artificial radioactive element, atomic no. 94, atomic wt. 244.064. The best-known α-emitting isotope is 239Pu (half-life 24,110 years) which, like 235U, is fissionable and can be used in atomic bombs and nuclear power plants; 238Pu (half-life 87.74 years) is used as an energy source in pacemakers. Pu ions are bone-seekers; ingestion is a radiation hazard, as with radium and radiostrontium.
[planet, Pluto]

plutonium

/plu·to·ni·um/ (Pu) (ploo-to´ne-um) chemical element, at. no. 94.

plutonium (Pu)

[plo̅o̅tō′nē·əm]
Etymology: planet Pluto
a synthetic transuranic metallic element. Its atomic number is 94; the atomic mass of its longest-lived isotope is 242. A highly toxic heavy metal, plutonium is used in nuclear power plants, and was used in the assembly of early nuclear weapons.

plu·to·ni·um

(Pu) (plū-tō'nē-ŭm)
A transuranium artificial radioactive element, atomic no. 94, atomic wt. 244.064. The best-known α-emitting isotope is 239Pu (half-life 24,110 years), which, like 235U, is fissionable and can be used in atomic bombs and nuclear power plants; 238Pu (half-life 87.74 years) is used as an energy source in pacemakers. Pu ions are bone seekers; ingestion is a radiation hazard as with radium and radiostrontium.
[planet, Pluto]

plutonium

A highly poisonous, radioactive metallic element produced from uranium in atomic breeder reactors and used as a fissile element in nuclear weapons. Plutonium concentrates in the bones where it remains for many years.

plutonium

a chemical element, atomic number 94, atomic weight 242, symbol Pu. See Table 6.
References in periodicals archive ?
Uranium worries outsiders because the technology needed to make highly enriched uranium bombs is much easier to hide than huge plutonium facilities.
Khan has been peddling a tested Chinese design for an implosion bomb suitable for use with plutonium (or HEU).
But we are talking about seven nuclear bombs worth of plutonium.
Several tonnes of plutonium have been released into the environment over the past 60 years by nuclear weapons tests, nuclear power plants and Sellafield.
Kim Jong-il may have nuclear weapons now; he certainly has enough plutonium to build some, and the reactors to breed more.
Many community members and environmental organizations--while happy to see the 6,400-acre site out of commission--are concerned that the project is being done in haste and find it unsettling that plutonium residue and toxins will be left several feet under the surface.
The DT-22 is a 45-gallon container that cannot be certified for plutonium shipments because it fails the government's "crush test," and could rupture in a highway accident.
The Soviets started dumping waste from reprocessed plutonium into Karachay in the early 1950s, and extreme levels of radiation are still being monitored there.
Dr Hamish Banford, head of decommissioning at the Scottish Universities Research and Reactor Centre at East Kilbride, said there is a risk of Plutonium 241 entering the food chain.
The subcritical nuclear tests use a plutonium isotope, which is hard to detonate.
The Plutonium Files: America's Secret Medical Experiments in the Cold War, by Eileen Welsome, New York: Dial Press, 576 pages, $26.
They say the landfill is widely contaminated with highly radioactive plutonium and other deadly wastes.