Etymograph

English

impermeability

Impermeability comes from French perméabilité ‘permeability’.

  1. Frenchc. 1600–presentperméabilité‘permeability’
  2. French, derivedc. 1600–presentimperméabilité
  3. Englishtodayimpermeability

attested reconstructed ? uncertain or disputed

Lineage

  1. Frenchc. 1600–presentperméabilité‘permeability’
  2. French, derivedc. 1600–presentimperméabilité
  3. Englishtodayimpermeability

Today it means

noun the quality of being impermeable

Language periods are conventional ranges, not dates for this word.

Etymograph / French perméabilité / impermeability