プログレッシブ和英中辞典(第4版)の解説
ぎしき【儀式】
〔慣習的な作法〕a formality；〔式典〕a ceremony；〔宗教の〕a service; a ritual
儀式を行う
perform a ceremony [service]
儀式は滞りなく行われた
The ceremony went off without a hitch.／The ceremony was completed smoothly.
適当なネクタイを選ぶのは，彼にとっては毎朝の儀式のようなものだ
The selection of a suitable tie is like a morning ritual with him.