noun a title used to address dignitaries (such as ambassadors or governors); usually preceded by `Your' or `His' or `Her'
Your Excellency
noun an outstanding feature; something in which something or someone excels
excellence.
a center of manufacturing excellence
the use of herbs is one of the excellencies of French cuisine
WordNet
Ex"cel*len*cy noun
Wordforms
pluralExcellencies
Definitions
Excellence; virtue; dignity; worth; superiority.
His excellency is over Israel.
Ps. lxviii. 34.
Extinguish in men the sense of their own excellency.
Hooker.
A title of honor given to certain high dignitaries, esp. to viceroys, ministers, and ambassadors, to English colonial governors, etc. It was formerly sometimes given to kings and princes.