so as to be airtight: hermetically sealed.

Origin of hermetically

First recorded in 1595–1605; hermetic + -ally
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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Contemporary Examples of hermetically

Historical Examples of hermetically

Word Origin and History for hermetically

c.1600; see hermetic.

Online Etymology Dictionary, © 2010 Douglas Harper