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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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radioactive material
material that is radioactive
material that is radioactive
noun.substance
1 Subcategories
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radioactive waste go
useless radioactive materials that are left after some laboratory or commercial process is completed