/ ˌserɪˈməʊniəl; NAmE -ˈmoʊ-/ adjective , noun
■ adjective
relating to or used in a ceremony :
ceremonial occasions
a ceremonial sword
► cere·mo·ni·al·ly / -niəli; NAmE / adverb
■ noun
[ U , C ] the system of rules and traditions that states how things should be done at a ceremony or formal occasion :
The visit was conducted with all due ceremonial.
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WORD ORIGIN
late Middle English : from late Latin caerimonialis , from Latin caerimonia religious worship, (plural) ritual observances.