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Definition of impermeable adjective from the Oxford Advanced Learner's Dictionary

impermeable

adjective
 
/ɪmˈpɜːmiəbl/
 
/ɪmˈpɜːrmiəbl/
(specialist)
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  1. impermeable (to something) not allowing a liquid or gas to pass through
    • impermeable rock
    • The insulating material should be impermeable to water vapour.
    opposite permeable
    Word Originlate 17th cent.: from French imperméable, or from late Latin impermeabilis, from in- ‘not’ + permeabilis (from permeare ‘pass through’, from per- ‘through’ + meare ‘pass, go’).
See impermeable in the Oxford Advanced American DictionarySee impermeable in the Oxford Learner's Dictionary of Academic English
Check pronunciation: impermeable

Nearby words

perspective
noun
 
 
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