What does 満開 mean?
満開 is a Japanese noun meaning “full bloom (esp. of cherry blossom); full blossom” in English. It is written as 満開 in kanji, まんかい in hiragana, and mankai in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
さくらは満開だった。
The cherry trees were in flower.