The common reason many comic book superheroes have superpowers. A prime example would be the Fantastic Four.
"'Why does he have superpowers?'. Well, he was...um...well, he was born a mut...no...um...he was bitten by..no, they've done that...uh....Oh, hell just do the old radioactivity thing."
by Blackbird June 28, 2005
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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
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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
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The convergence of radio and interactive media platforms that provide advertisers and marketers the opportunity to reach target audiences through multiple integrated touchpoints.


The RadioActive marketing campaign included radio spots, VideoAds, opt-in email blasts, streaming video and display ads.
by RadioActiveSF March 03, 2009
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Definition 1: A kind of girl that knows that they can date anyone but is not nesscarily a whore but can choose anyone to date sometimes guys or girls

Definition 2: A kind of girl that you date and you know what shes not good for you but you can't really leave her shes just that good

Definition 3: The opening song on the 1978 Gene Simmons Solo Album
Example 1
X: Hey you want to date Imelda

Pancho: hell ya I want to date her

X: Well just to let you know that chick is Radioactive man to start talking to her man!

Example 2

Matthew X: Hey man you gotta leave that chick man

X: I want to but shes Radioactive man, she knows how I feel and she knows that this is real man!

Matthew X: She wants it all the time?

X: Yeah how do you know

Matthew X: I was listening to KISS Gold and I heard it man lol
by El Equis November 11, 2009
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Song by J. Grimes (junior Grimes) notable for being closer to his uk roots and for being an unofficial diss to the trash ass rappers from Lee’s summit, MO

Originally released in 2019
J grimes performed “radioactive rage” at the riot room in kc
by Toxicity007 October 07, 2021
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Radioactive gamers are a special breed of toxic. they are so goddamn potent and were toxic for so long that they now transcend the toxic scale reaching to the next level radioactive.

they usually are open about their actions and seem to relish in them. radioactive gamer knows no such thing as "nice" anymore it was too late after some dickhead cheaters and boosted pricks fucked his shit up one too many times.

coined by : {Git Gud} Sandro 2016
(after flaming the shit out of people)
random dude : bro why are you so fuking toxic that's ridiculous no one is that salty..
Radioactive gamer: bitch suck my dick you noob shit (more potential flame) I am not just toxic I am fuking radioactive and for a tard like you let me clearly give you a Definition :Radioactive gamers are a special breed of toxic. they are so goddamn potent and were toxic for so long that they now transcend the toxic scale reaching to the next level radioactive. SUCK ME OFF BITCH.
by {Git Gud} Sandro August 20, 2016
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