What is the Threat of Radon? Radon is the second leading cause of lung cancer after smoking. In the United States, the EPA estimates that about 21,000 lung cancer deaths each year are radon related and in Canada that number stands at approximately 3,000.
The definition of intermittent is something that starts and stops or happens irregularly. An example of intermittent is occasional thunder during a rainstorm. stopping and starting at intervals; pausing from time to time; periodic. Origin of intermittent.
inÂ·ciÂ·denÂ·tal. adj. 1. Occurring or likely to occur as an unpredictable or minor consequence: the principle that even annoying, intrusive, and offensive speech is to be protected by the courts and tolerated by the public as incidental to an open society (Frederick Schauer).