Definition of lamella in English:



  • 1A thin layer, membrane, or plate of tissue, especially in bone.

    • ‘The first-order crossed lamellae do not become appreciably narrower toward the interior of the shell layer.’
    • ‘Studies of intact animals, isolated gills, gill lamellae, and membrane vesicles have produced a variety of models of osmoregulatory ion transport in euryhaline crustaceans.’
    • ‘In the cell corner middle lamella, gold particles are mainly associated with the dense regions.’
    • ‘Several genera have well-developed dental lamellae, whereas others lack these structures.’
    • ‘Tunas have numerous lamellae (gill membranes) and very thin lamellar walls, and are able to extract more oxygen from the water than any other fish.’
    1. 1.1Botany A membranous fold in a chloroplast.
      • ‘The EM tilt series gave further information about the organization of lamellae within the chlorosome.’
      • ‘The enzyme randomly cleaves ß - 1,4 linked galacturonosyl residues of pectins from the middle lamella and primary cell-walls of higher plants, resulting in the maceration of plant tissues.’
      • ‘In chloroplasts, repair of PSII is thought to take place in the stromal lamellae.’
      • ‘Sections were made at distances of 200 mm, 100 mm and 40 mm from tips of an adventitious root and stained with Sudan Red 7B. Lipophilic substances such as suberin lamellae, were stained bright red.’
      • ‘Exodermal suberin lamellae started to develop 30 mm behind the root tip in rice and were fully developed at about 60 mm behind the tip.’


Late 17th century: from Latin, diminutive of lamina ‘thin plate’.