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hermetically

American  
[hur-met-ik-lee] / hɜrˈmɛt ɪk li /

adverb

  1. so as to be airtight.

    hermetically sealed.

Etymology

Origin of hermetically

First recorded in 1595–1605; hermetic + -ally

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.