Late 15th century; earliest use found in Secreta Secretorum. From post-classical Latin honorificentia honour, respect, mark of respect (3rd cent.) from classical Latin honorificus + -entia, after e.g. magnificentia, mūnificentia.
Definition of honorificence in US English:
honorificence
nounˌɒnəˈrɪfɪs(ə)ns
rare
The action of honouring someone or something.
Origin
Late 15th century; earliest use found in Secreta Secretorum. From post-classical Latin honorificentia honour, respect, mark of respect (3rd cent.) from classical Latin honorificus + -entia, after e.g. magnificentia, mūnificentia.