English

electrofilter

From electro- + filter.

Ancient Greek ἤλεκτρον ‘amber’

French electrum

French électro-

Proto-Indo-European *pel-

Proto-Germanic *fellą ‘skin, hide’

Proto-West Germanic *felt

Medieval Latin filtrum ‘felt’

Middle English filtre

Today it means

noun A filter used in electrofiltration

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

Etymograph / electrofilter