What does 気圧 mean?
気圧 is a Japanese noun meaning “atmospheric pressure” in English. It can also be translated as “atmosphere (unit of pressure)” depending on context. It is written as 気圧 in kanji, きあつ in hiragana, and kiatsu in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
飛行機でお酒飲むと、気圧のせいか酔いやすい。
Maybe it's the low air pressure that means you get drunk more easily on planes.