Top Definition
(zel'-lee-on)

Adj; achieving and undefined status or standard higher than those currently accepted.

Noun; a level of status or standard obtained which is higher than that which is currently accepted as the highest.
Adj; The manufacturing system they sold us was xelleon in quality.

Noun; She spent a great deal of time and effort reaching the xelleon she is at today.
by Encyclopedia Tinantica February 20, 2011

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