Definition of radioactive
: of, caused by, or exhibiting radioactivity
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Examples of radioactive in a Sentence
Uranium and plutonium are radioactive.
Recent Examples of radioactive from the Web
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Farrell reiterated his demand that Parcel A be tested for radioactive materials.
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One of their jobs was to set up an electrical generator powered by plutonium, but the radioactive material was stuck inside its shielded container.
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That’s because Shellenberger makes autoradiographs—photos created through exposure to radioactive materials.
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Dricks, the commission spokesman, said returning the plutonium was part of the school's plan to reduce its inventory of radioactive material.
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Tepco engineers sealed it in a steel cask and interred it with other radioactive waste on the plant site.
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That dirt, at least 4,300 cubic yards, was transported in watertight steel bins to Clive, Utah, one of four disposal sites in the United States licensed to accept low-level radioactive waste.
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In South Carolina, a plan to store radioactive nuclear waste in a rural area prompted complaints that the state was being turned into a nuclear dump.
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In South Carolina, a plan to store radioactive nuclear waste in a rural area prompted complaints that the state was being turned into a nuclear dump.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'radioactive.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of radioactive
International Scientific Vocabulary
RADIOACTIVE Defined for English Language Learners
Definition of radioactive for English Language Learners
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: having or producing a powerful and dangerous form of energy (called radiation)
RADIOACTIVE Defined for Kids
Definition of radioactive for Students
: caused by or exhibiting radioactivity
- a radioactive element
Medical Dictionary
medical Definition of radioactive
: of, caused by, or exhibiting radioactivity
- radioactive isotopes
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radioactively
adverbLearn More about radioactive
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Spanish Central: Translation of radioactive Nglish: Translation of radioactive for Spanish speakers Britannica English: Translation of radioactive for Arabic speakers
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