Emitted outwards from a centre like rays.(adjective)
Having rays.(adjective)
Having been exposed to (especially nuclear) radiation.(adjective)
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Use "irradiated" in a sentence
"In the U.S., food irradiation is used for various products, including ground beef, but most retailers resist the practice, lest the word irradiated'' on the label scare off customers."
"The notion that long life beverages have been "irradiated" is urban myth."
"However another source is the materials inside the compartment becoming irradiated from the neutron flux."