yolk cell

noun

: a nucleated cytoplasmic mass that is derived from the egg nucleus of an arthropod and provides nutriment for the developing embryo

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