supercross
/ˈsuːpəkrɒs/ /ˈsjuːpəkrɒs/(also super-x) originally US
noun
A form of motocross staged on indoor, man-made tracks featuring numerous jumps and obstacles. Originally and frequently attributive.
Origin
1970s; earliest use found in Evening Independent (Massillon, Ohio). From super- + -cross.
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