JMdict: 1528360

密閉 【みっぺい】

  1. [n,vs,vt] shutting tightly; making airtight; sealing hermetically
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
密 Secrecy, Density (pop), Minuteness, Carefulness ミツ ひそ.か
閉 Closed, Shut ヘイ と.じる, と.ざす, し.める, し.まる, た.てる