adj ·Rare ·Advanced level

Definitions

Adjective

1. 1
   Synonym of impermeable. not-comparable
2. 2
   Having the same magnetic permeability as that of free space, so that the material in question has a magnetic permeability μ=μ₀ (where μ₀ = 4π×10⁻⁷ N A⁻² exactly in SI units). not-comparable

Synonyms

All synonyms

impermeable

Antonyms

All antonyms

permeable

Etymology

From non- + permeable.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.