(usually initial capital letter) Also, Excellence.a title of honor given to certain high officials, as governors, ambassadors, and Roman Catholic bishops and archbishops (preceded by his, your, etc.).
2.
(usually initial capital letter) a person so entitled.
3.
(usually initial capital letter) the title of the Governor General of Canada while in office.
4.
Usually, excellencies.excellent qualities or features.
Origin: 1275–1325; Middle English excellencie < Latin excellentia.See excellent, -ency