Enter a clue or pattern or both:

The Clue

Embryological layers (9 letter answer)

The Answer

ECTODERMS

Tags


Notes

The answer ECTODERMS is so rare that it appears less than once every 2500 puzzles.

Definition

ECTODERM as a noun:

1. (ectoderm, exoderm, ectoblast) = the outer germ layer that develops into skin and nervous tissue