English
hemimembrane
From hemi- + membrane.
Proto-Indo-European *mems- ‘flesh, meat’
Proto-Indo-European *mḗms ‘flesh’
Proto-Italic *memzrom
Latin membrum ‘a limb or member of the body’
Latin membrāna ‘skin or membrane that covers parts of the body’
English membrane
Today it means
noun Any biological membrane whose structure is that of half of a normally bilayered one
Language periods are conventional ranges, not dates for this word.
Etymograph / hemimembrane