1. A thin, protective outer layer or membrane covering a plant or animal surface, especially the waxy layer on leaves and insects.
Usage: technical; biology
2. In anatomy, the outermost layer of skin; the epidermis.
Usage: medical; anatomy

Examples

• The cuticula of the leaf helps reduce water loss in dry climates.
• Insects have a waxy cuticula that protects them from dehydration.
• The plant's cuticula is composed mainly of lipids and waxes.
• Under the microscope, the cuticula appeared as a thin, translucent layer.
• The cuticula serves as a barrier against pathogens and environmental stress.