cotyledon
/ˌkɑtəˈlidən/
noun
- The first leaf or pair of leaves that appear from a seed as it begins to grow.
- Botany students examined the cotyledon to determine if the plant was a monocot or dicot.
- When the bean sprouted, its cotyledon emerged first from the soil.
- The seedling's cotyledon provided nutrients until the true leaves developed.
Synonyms