Definition of "unobtainium" []

• Alternative spelling of unobtanium. (noun)

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• "For example, during the development and service period of the SR-71 Blackbird spy plane, engineers working for Lockheed Corporation at the Skunk Works used the term unobtainium as a dysphemism for titanium."
• "Look, HG Wells had Cavorite, and the 'unobtainium' is clearly Cavorite in disguise."
• "The techno-geek community was dealing in unobtainium long before James Cameron heard of it."