English

heterolayer

From hetero- + layer.

Proto-Indo-European *sem- ‘one, whole’

Proto-Indo-European *sḿ̥teros

Proto-Hellenic *hə́teros

Ancient Greek ἕτερος ‘other, another, different’

Middle English leyer ‘a layer of stones’

English layer

Today it means

noun Any of a series of thin layers of different materials in a semiconductor (or similar) device

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

Etymograph / heterolayer