Something that is ceremonial relates to a ceremony or is used in a ceremony.
例句
He represented the nation on ceremonial occasions...他在正式場合代表國家。Feathers of various kinds are used by Native Americans for ceremonial purposes.美洲印第安人在舉行儀式時用到各種羽毛。
ADJ
(職位、功能或事件)禮儀性的，象征性的
A position, function, or event that is ceremonial is considered to be representative of an institution, but has very little authority or influence.
例句
Up to now the post of president has been largely ceremonial.到目前為止，總統(tǒng)一職在很大程度上只是禮儀性的。
N-VAR
儀式;典禮;禮節(jié)
Ceremonial consists of all the impressive things that are done, said, and worn on very formal occasions.
例句
...papal ceremonial.教皇加冕儀式...the ceremonials leading up to the young Emperor's wedding.年輕皇帝大婚前的典禮