As adjectives the difference between impermeable and gastight
is that impermeable is impossible to permeate while gastight is impermeable to gases.
impermeable
English
Adjective
(
en adjective)
impossible to permeate
not allowing passage, especially of liquids; waterproof
Synonyms
* sealed
Antonyms
* permeable
Related terms
* nonpermeable
* permeability
* impermeability
gastight
English
See also
* airtight
* watertight