The outermost layer or external membrane of an organism; specifically relating to the outer epithelial layer of certain organisms.
From Greek 'ek-' (out, external) + 'derm' (skin) + '-on' (noun suffix). This anatomical term specifically names the outermost protective layer of organisms.
Your ecderon is essentially your biological armor—whether you're a human with skin, an insect with an exoskeleton, or a single-celled organism with a cell membrane, you need that ecderon to keep the nasty stuff outside from getting in.
Complete word intelligence in one call. Free tier — 50 lookups/day.