Definition of "lamina"

a thin layer, plate, or scale of material

1. (anatomy) either of two broad, flat plates of bone of a vertebra that is fused with and extends from the pedicle to the median line of the neural arch to form the base of the spinous process and that along with the pedicle forms the posterior part of the vertebral foramen  examples

2. (botany) the flat expanded part of a foliage leaf or leaflet  examples

3. (geology) a fine layer that occurs in sedimentary rocks

4. (zootomy) one of the narrow thin parallel plates of soft vascular sensitive tissue that cover the flesh within the wall of a hoof  examples