When used above the medical dose range, stimulants are associated with the development of stimulant psychosis. As with all addictive drugs, the overexpression of ÎFosB in D1-type medium spiny neurons in the nucleus accumbens is implicated in methylphenidate addiction.
Definitions (2) 1. The degree to which an investor or business is utilizing borrowed money. Companies that are highly leveraged may be at risk of bankruptcy if they are unable to make payments on their debt; they may also be unable to find new lenders in the future.
Learner's definition of RIG. [+ object]. : to control or affect (something, such as a game or election) in a dishonest way in order to get a desired result. They are suspected of rigging [= fixing ] the election. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples. â compare 3rig. adjective.