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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
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element, chemical element go
any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
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plutonium, Pu, atomic number 94 go
a solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons
a solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons
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plutonium 239 go
a highly fissionable isotope of plutonium that is used in atomic weapons and as a reactor fuel
a highly fissionable isotope of plutonium that is used in atomic weapons and as a reactor fuel
weapons plutonium, weapon-grade plutonium
plutonium 239 that is recovered when nuclear weapons are disassembled
plutonium 239 that is recovered when nuclear weapons are disassembled
noun.substance
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