What does 成立 mean?
成立 is a Japanese noun meaning “formation, establishment, completion” in English. It can also be translated as “conclusion (e.g. of a deal), being valid (of a theory, argument, etc.)” depending on context. It is written as 成立 in kanji, せいりつ in hiragana, and seiritsu in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
新しい法が成立した。
A new law has come into existence.