Thin Tissue-Sheet Boundary in a Living Organism
This page is the CodyCross answer for the clue below from La Bella Roma, Group 402, Puzzle 4 (Castel Sant Angelo).
Question is: Thin Tissue-Sheet Boundary in a Living Organism
and the answer is: MEMBRANE
Word Meaning:
MEMBRANE — (anatomy, zootomy) A flexible enclosing or separating tissue forming a plane or film and separating two environments.
Definitions from Wiktionary.