Definition of radioactive
: of, caused by, or exhibiting radioactivity
Examples of radioactive in a Sentence
Uranium and plutonium are radioactive.
Recent Examples of radioactive from the Web
Both times, low-level radioactive waste leaked from trucks from a Wyoming uranium processing facility.
EON transferred on Monday its share of 24 billion euros that the government demanded from utilities into a fund that will pay for costs related to the final storage of radioactive waste.
At the core of their concern was a fear that states in the volatile Middle East would have inadequate security for the plants and safeguards for their radioactive waste—
The facility stores low-level radioactive waste and the company wants to dramatically expand the site, which has a 14,000-acre footprint.
Every three years the U.S. government issues a report to the International Atomic Energy Agency (IAEA) on radioactive waste management.
The criminal complaint says those were thorium and americium, both radioactive metals.
Its fuel and radioactive waste have been shipped away, and what’s left of the unit is monitored by Exelon.
Unacceptable products include: industrial, commercial and agricultural waste; latex paint; fireworks; ammunition; sharps or syringes; propane tanks; smoke detectors; gas cylinders; radioactive material; regular garbage; and fire extinguishers.
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
First Known Use: 1898See Words from the same year
RADIOACTIVE Defined for English Language Learners
Definition of radioactive for English Language Learners
: 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
Seen and Heard
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