Compound Composed of two or more similar parts. A compound leaf is a single leaf composed of multiple leaflets.
Glossary: Leaf morphology
Purdue Arboretum botanical terminology reference and learning database.
Leaf morphology
Cordate Having a heart-shaped outline. Botanists use this feature to describe leaf shape, surface, edge, or arrangement, which helps with plant identification. Did you know? Redbud leaves are a familiar example of cordate leaves, with a heart-shaped outline.
Cotyledon A seed leaf. (a leaf which is part of a seed) Did you know? The number of cotyledons separates monocots from dicots — one seed leaf versus two seed leaves.