embryonation

noun

em·​bry·​o·​na·​tion

ˌembrēəˈnāshən

plural -s

: the formation of an embryo within an egg

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now