English
heterofacial
From hetero- + facial.
Proto-Indo-European *sem- ‘one, whole’
Proto-Indo-European *sḿ̥teros
Proto-Hellenic *hə́teros
Ancient Greek ἕτερος ‘other, another, different’
English hetero-
Proto-Indo-European *dʰeh₁k-
…
Proto-Italic *fakjō ‘to make’
Latin faciō ‘to make, construct, fashion, frame, build, erect’
Latin faciēs ‘form, configuration, figure’
Medieval Latin faciālis ‘face-to-face, direct, open’
English facial
Today it means
adj On opposite faces
Language periods are conventional ranges, not dates for this word.
Etymograph / heterofacial