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A slang derivative of effervescence. The term is used to describe the awesomeness given off by one, and only one, interaction designer extraordinaire. It is a feeling hard to describe, but you know it when you are in its presence; there is a certain "rarefied vocational air".
He walked into the room and saffervescence filled all of the available space. The air felt electric.
by Dan Harrelson March 12, 2008