Endosperm (noun)

The part of a seed that provides nutrition to the developing embryo and is often stored in the seed.

Origin:

From new latin endospermum, from greek endon (inside) + sperma (seed).

Examples:

1. The endosperm of the cereal grain was milled to make flour.
2. The endosperm of the coconut is consumed as a source of oil.
3. The endosperm of the seed is a rich source of energy for the growing plant.
4. The endosperm of the orchid seed contains little food, requiring the seedling to obtain nutrients from symbiotic fungi.
5. The endosperm of the date palm seed is used to feed livestock in arid regions.