Enter a clue or pattern or both:
The Clue
Fertilized egg cells (7 letter answer)
The Answer
ZYGOTES
Tags
Notes
The answer ZYGOTES is so rare that it appears less than once every 2500 puzzles.
Definition
ZYGOTE as a noun:
1. (zygote, fertilized ovum) = the cell resulting from the union of an ovum and a spermatozoon (including the organism that develops from that cell)