English
extramembranous
From extra- + membranous.
Formed from extra- + membranous
Proto-Indo-European *h₁éǵʰs ‘out’
Proto-Indo-European *h₁eǵʰsteros
Proto-Italic *eksteros
Latin exter ‘being on the outside’
Latin extrā ‘outside, except, beyond’
English extra-
Middle French membraneux
English membranous
Today it means
adj Outside of a membrane
Language periods are conventional ranges, not dates for this word.
Etymograph / extramembranous