What is the meaning of Ceremonious?

According to the required or usual ceremonies, formalities, or rituals; specifically , to ceremonial laws in the Bible.

Involving much ceremony; ostentatious, showy.

Of a person: fond of ceremony or ritual, or of observing strict etiquette or formality; punctilious.

Synonym of ceremonial (of, relating to, consisting of, or used in a ceremony or rite); formal, ritual.

Source: wiktionary.org