The movie doesn't use the term "anisitive," but it does introduce the concept of "elemental repulsors", which are a major plot point.
Here's the breakdown:
* The problem: Tony Stark is struggling with the effects of Palladium poisoning from the Arc Reactor in his chest. This is damaging his health and could ultimately kill him.
* The solution: He needs to find a new element to power the Arc Reactor.
* The "anisitive" element: While the movie doesn't use the term "anisitive," it's a key element in the story. Tony discovers that the element is "palladium" which can be replaced by "Vibranium".
* Vibranium: The element is a rare metal with incredible durability and the ability to absorb vibrations, found in the fictional African nation of Wakanda. This is how Tony eventually overcomes the problem of the Palladium poisoning.
Important Note: The term "anisitive" is not used in the movie. You might be misremembering or thinking of something else. The key element in Iron Man 2 is the search for a new element to replace Palladium and the discovery of Vibranium.