English
heterogender
From hetero- + gender.
Proto-Indo-European *sem- ‘one, whole’
Proto-Indo-European *sḿ̥teros
Proto-Hellenic *hə́teros
Ancient Greek ἕτερος ‘other, another, different’
English hetero-
Proto-Indo-European *ǵenh₁- ‘to produce, beget’
…
Proto-Italic *genos
Latin genus ‘birth, origin; kind, type’
Old French gendre ‘type, kind’
Middle English gendre ‘type’
English gender
Today it means
adj Involving people with different genders.
Language periods are conventional ranges, not dates for this word.
Etymograph / heterogender