Definition

Noun: A thin plate, layer, or scale of material, especially one found in biological or geological structures. It often refers to a flat, sheet-like anatomical part, such as in a leaf, bone, or mineral.

Examples

• The lamina of a leaf is the broad, flat part where photosynthesis primarily occurs.
• Under the microscope, the rock sample revealed a distinct mineral lamina.
• The vertebral lamina is the bony arch that protects the spinal cord.

Advanced Usage

• In Botany: The term specifically denotes the blade of a leaf, the expanded, typically green portion.
  • The insect damage was concentrated on the leaf lamina.
• In Anatomy: It often refers to thin layers of bone or connective tissue.
  • The surgery involved removing a small portion of the bony lamina to relieve pressure on the nerve.

Variants and Related Words

• Laminae (plural): The standard plural form of "lamina."
  • The sedimentary rock showed alternating light and dark laminae.
• Laminar (adjective): Relating to, consisting of, or arranged in thin layers or laminae. Often used to describe smooth, layered fluid flow.
  • The laminar structure of the material gives it unique strength.
• Laminate (verb/noun): To create a material by bonding multiple thin layers together; the resulting layered product.
  • They decided to laminate the important document for protection.

Synonyms

• Layer
• Plate
• Sheet
• Scale
• Flake

Related Phrases

• Basal lamina: (Biology) A thin layer of extracellular matrix underlying epithelial tissue.
• Lamina propria: (Anatomy) A thin layer of connective tissue found beneath the epithelium in mucous membranes.

Noun

1. a thin plate or layer (especially of bone or mineral)