What does 定員 mean?
定員 is a Japanese noun meaning “fixed number of regular personnel, capacity (e.g., of boat)” in English. It can also be translated as “capacity (of a bus, boat, theatre, etc.)” depending on context. It is written as 定員 in kanji, ていいん in hiragana, and teiin in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
このエレベーターの定員は１０人だ。
This elevator's capacity is ten people.