1 definition by John Serafino

An adjective describing total and utter dominance in a certain area. Derived from Michael Phelps' dominance in the 2008 Summer Olympics in which he set a record for winning 8 gold medals.
Wow. John can only be descibed as Phelpsian. He beats everyone at everything!
by John Serafino August 17, 2008
Get the Phelpsian mug.