English

hyperpermeable

From hyper- + permeable.

Proto-Indo-European *úp

Proto-Indo-European *upér ‘over, above’

Proto-Hellenic *hupér

Ancient Greek ὑπέρ ‘over’

Proto-Indo-European *mey-o-

…

Latin meō ‘to go along, pass or traverse’

Latin permeō ‘to pass through’

Latin permeābilis ‘passable’

Middle English permeable

Today it means

adj Having higher than normal permeability.

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

Etymograph / hyperpermeable