Top Definition
to become one with the earth and universal being through the use of psychoactives and their reactions with the human mind and conscience; usually, an activity that's meditative and binding to a certain extent, bringing friends closer together intellectually and even physically in some cases depending on the strength and effect of the substance being used; normally relates to stronger drugs that heighten one's senses and alter their perception of reality, including, but not limited to, ecstasy, magic mushrooms, and lsd
-"Yo, I can't wait for this Friday. I'm gonna earthisize with a bunch of people."
-"Nice. What you earthisizing with?"
-"Ecstasy, my personal favorite."
by christhedumbbum September 09, 2008

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