adjective Physics, Chemistry.
Related formsra·di·o·ac·tive·ly, adverbnon·ra·di·o·ac·tive, adjectiveun·ra·di·o·ac·tive, adjective
Examples from the Web for radioactive
He was radioactive to those who once valued his political counsel and editorial avidity.Murdoch on the Rocks: How a Lone Reporter Revealed the Mogul's Tabloid Terror Machine|Clive Irving|August 25, 2014|DAILY BEAST
The Japanese monster gets a $160 million blockbuster reboot and protects mankind against a pair of radioactive MUTOs.
The Iranians now have most of the know-how and most of the radioactive stuff they need to build a bomb.Iranian Bombs and Black Swans in the Nuclear Negotiations|Christopher Dickey|December 17, 2013|DAILY BEAST
Was the Palestinian leader poisoned by radioactive polonium?
It can contain salts, metals, and sediments that are sometimes toxic or radioactive.
"Eighty-five isn't nearly as radioactive as the elements akin to it," he said.The Raid on the Termites|Paul Ernst
Molten drops of radioactive lava skittered across the durilium hull as Kennon advanced the power.The Lani People|J. F. Bone
There the radioactive gases produced by the explosion condense on and into this debris, producing radioactive fallout particles.In Time Of Emergency|Department of Defense
The study of these radioactive elements has led to a new atomic theory.Creative Chemistry|Edwin E. Slosson
In this case too it is associated with radioactive matter, which is almost ubiquitous.