Biology

• Lamella (mycology), a papery rib beneath a mushroom cap
• Lamella (zoology), a plate-like structure in an animal
• Lamella (cell biology), part of a chloroplast
• Lamella (genus), a group of land crabs in the family Gecarcinucidae
  Gecarcinucidae
  Gecarcinucidae is a family of freshwater crabs. Some scientists also include the genera placed in the family Parathelphusidae in a larger Gecarcinucidae....
  
  
• The leading edge of motile cells, containing the lamellipodia
  Lamellipodia
  The lamellipodium is a cytoskeletal protein actin projection on the mobile edge of the cell. It contains a quasi-two-dimensional actin mesh; the whole structure propels the cell across a substrate...
  
  
• Middle lamella
  Middle lamella
  The middle lamella is a pectin layer which cements the cell walls of two adjoining cells together. Plants need this to give them stability and so that they can form plasmodesmata between the cells. It is the first formed layer which is deposited at the time of cytokinesis. The cell plate that is...
  
  , a pectin layer which cements the cell walls of two adjoining plant cells together.

Other uses

• Lamella (materials), a fine, plate-like structure in a group generally
• A type of roof; used to cover wide, open areas with no supporting members (ie. arenas, "domes")