祭儀 is read as さいぎ (saigi) and means rites.
さいぎ
saigi
さいてん
festival
さいだん
altar
さいせいぶんり
separation of church and state
さいせいいっち
unity of church and state
さいし
priest
さいだんが
altarpiece
れいぎ
manners
ぎょうぎ
おじぎ
bow
ちきゅうぎ
Earth globe (model)
そうぎ
funeral
ぎ
ceremony