What does 途端 mean?
途端 is a Japanese noun meaning “just (now, at the moment, etc.)” in English. It is written as 途端 in kanji, とたん in hiragana, and totan in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
これをきいたとたん、彼は真っ青になった。
On hearing this, he turned pale.