密闭

Traditional form:

密閉

Pinyin (reading):

mìbì

Definitions:

• sealed
• airtight

Characters:

• 密 - secret, confidential; intimate, close; dense, thick
• 闭 - to shut, to close; to obstruct, to block

Traditional characters:

• 密 - secret, confidential; intimate, close; dense, thick
• 閉 - to shut, to close; to obstruct, to block