What does 真空 mean?
真空 is a Japanese noun meaning “vacuum” in English. It can also be translated as “absolute void” depending on context. It is written as 真空 in kanji, しんくう in hiragana, and shinkuu in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
その実験には真空が必要だ。
For that experiment they need a complete vacuum.