Entry from British & World English dictionary
Convert (a substance, molecule, etc.) into a radioactive form.
- Thousands of tons of spray radioactivate the surfaces they fall upon to a dangerous degree, for an unknown length of time.
- The neutron bombardment is serious: it radioactivates substances and weakens structures.
- The terrific explosion sent reddish-blue or dark-brown flames shooting out against the ground at an astonishing velocity, radioactivating some forty percent of the city area.
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