Lamina (noun)

1. A thin plate or layer, especially of bone, metal, or mineral in the body.
2. A thin layer of tissue in an organism, such as the layers of the skin or the layers of the leaves of a plant.
3. A thin sheet of material, such as metal or plastic, used in manufacturing or construction.

Origin:

Late latin, from latin, blade, leaf, from lamina.

Examples:

1. The lamina of the vertebrae provides support and protection for the spinal cord.
2. The tree's leaves were made up of multiple laminas that provided different functions.
3. The lamina of the metal sheet was only a few micrometers thick.
4. The laminas of the skin protect the body from external harm.
5. The laminas of the plant cell walls provide structural support.