Top Definition
adj. The state of having smoked so much marijuana that another joint will have no effect on the individual. Originates from the word idempotent, a matrix property such that when a matrix is mulitplied by itself, the product is the original matrix.
Adam knew that he was highdempotent, but he smoked another joint anyway which, of course, made him no higher.
by statman10 May 12, 2010

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