Where does “juxtamembranous” come from?

juxtamembranous (English) comes from English membranous, from Middle French membraneux, from Latin membraneus, from Latin membrāna, from Latin membrum, from Proto-Italic memzrom, from Proto-Indo-European mḗms, from Proto-Indo-European mems-.

Ancestry of “juxtamembranous”, step by step

juxtamembranous traces back through two separate lines of ancestry.

via English membranous

StepLanguageWordMeaning
1EnglishmembranousHaving the qualities of, or pertaining to, a...
2Middle Frenchmembraneux
3Latinmembraneusof parchment
4Latinmembrānathe skin or membrane that covers parts of the body; especially the skin or slough of snakes
5Latinmembrumlimb of the body; member; the penis; a portion,...
6Proto-Italicmemzrom
7Proto-Indo-Europeanmḗmsflesh, meat
8Proto-Indo-Europeanmems-flesh, meat
9Proto-Indo-Europeanme-ms-
10Proto-Indo-Europeanmes-

via English juxta

StepLanguageWordMeaning
1EnglishjuxtaIn males of most species of order Lepidoptera, an...
2Latiniuxtānearly, nigh
Every word from Proto-Indo-European mes-Every word from Proto-Indo-European me-ms-Every word from Proto-Indo-European mems-