To ascent to a higher plane of existence. According to theories there are 7 planes on the path of human evolution. Ascention is the process you go through when you die, but only if you are far enough evolved. When you are ascended, you exist as pure energy, that can take several forms.
Word discovered by famed linguist Courtney Love when she was randomly typing some stoner psychobabble at her My Space account. It is a combination of the words "ass" and "scientific" and is defined as 'someone who has mastered the art of being an ass(or making an ass out of themselves) to the point it has become a science with them'.