Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps


Adjective: radioactive  ,rey-dee-ow'ak-tiv
  1. Exhibiting or caused by radioactivity
    "radioactive isotope"; "radioactive decay"; "radioactive fallout"

See also: hot [informal]

Antonym: nonradioactive

Encyclopedia: Radioactive, LLC

Nearest

radio set
radio signal
radio source
radio spectrum
radio station
radio telescope
radio theater
radio theatre
radio transmitter
radio wave
radioactive
radioactive dating
radioactive decay
radioactive dust
radioactive iodine excretion test
radioactive iodine test
radioactive iodine uptake test
radioactive material
radioactive tracer
radioactive waste
radioactively