Enter a clue or pattern or both:
The Clue
Outermost cell layer (8 letter answer)
The Answer
ECTODERM
Tags
Notes
The answer ECTODERM is so rare that it appears less than once every 2500 puzzles.
Related Clues
Outer membrane of a jellyfish
Definition
ECTODERM as a noun:
1. (ectoderm, exoderm, ectoblast) = the outer germ layer that develops into skin and nervous tissue