What does 発展 mean?
発展 is a Japanese noun meaning “development, growth, progress” in English. It can also be translated as “development (of a situation, story, etc.), playing around (sexually; esp. of a male homosexual)” depending on context. It is written as 発展 in kanji, はってん in hiragana, and hatten in romaji. This word is part of JLPT N3 vocabulary.
Example sentences
彼らは町の発展に大いに貢献してくれるだろう。
They will contribute greatly to the growth of the town.
私達の関係が発展することを希望しています。
I hope to see our relationship expand.