English

hypomorph

From hypo- + -morph.

Formed from hypo + morph

Proto-Indo-European *upó ‘under, below’

Ancient Greek ὑπό ‘under’

English hypo

Ancient Greek μορφή ‘form, shape’

English morph

Today it means

noun a mutation that causes a partial loss of gene function.

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

Etymograph / hypomorph