Top Definition
A slang term for wack or "not cool"
Used in conjunction with the Pasadena term "active"
Originated in Eagle Rock specifically Center for the Arts, Eagle Rock.
Homework is soooo radioactive.
This girl didn't call me back, she's soooo radioactive.
by missmeags April 24, 2009
A fairly good show usually airing on YTV at 9:30 PM. It is about a bunch of odd highschool students who do radio broadcasts.
Radio Active once changed their characters and screwed it up. The original characters are better.
by Darian December 24, 2003
A person who retains power and influence at their place of work, even after they have retired or moved on.
General Smith is still radio active, he scored us a $3 million contract even though he's retired.
by G6 February 21, 2008
When your completely un-aware of the entertainment industry. You cant recall names, songs, movies, and tv shows and your about to turn 18.
Me : What is all this? Youtube? E! Will Ferrel? Dj Khaled? Bob Marley?... sh?ts wierd.
Friend : Your Radioactive!?
via giphy
by westhillseagles September 10, 2016
A girl that you cant try and get because she has recently been in a relationship with a friend whom would be annoyed if you went for her.
"Wish me luck, I'm going after her!"
"Bro, you cant go after her, she only broke up with Steve last week, she's still radioactive."
by FearNaught November 03, 2012
A song by Imagine Dragons that is the most overrated Imagine Dragons song of all time.
What song is that?
Radioactive by Imagine Dragons.
by AntiCaesar May 15, 2016
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