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steroid

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steroid/ˈstɛˌroɪd/noun
pluralsteroids
steroid
/ˈstɛˌroɪd/
noun
pluralsteroids
Learner's definition of STEROID  
[count]
: a natural substance that is produced in the body

on steroids

: using anabolic steroids
US, informal + humorous : very large or impressive
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