lamella

views updated Jun 27 2018

lamella (pl. lamellae)
1. (in botany)
a. Any of the paired folds of membranes seen between the grana in a plant chloroplast.

b. Any of the spore-bearing gills on the underside of the cap of many mushrooms and toadstools. See also middle lamella.

2. (in zoology) Any of various thin layers of membranes, especially any of the thin layers of tissue of which compact bone is formed.

A Dictionary of Biology

lamella

views updated May 18 2018

lamella
1. One of the membranes that comprise the thykaloid discs in chloroplasts. Those in adjacent grana often appear interconnected.

2. See GILL.

3. A leaf, leaf-like structure, or leaf blade.

A Dictionary of Plant Sciences MICHAEL ALLABY

lamella

views updated Jun 11 2018

lamella
1. A thin, plate-like structure (e.g. in the gills of Bivalvia and fish).

2. A thin layer that forms part of the matrix of bone.

A Dictionary of Zoology MICHAEL ALLABY

lamella

views updated May 18 2018

lamella (lă-mel-ă) n. (pl. lamellae)
1. a thin layer, membrane, scale, or platelike tissue or part.

2. a thin gelatinous medicated disc used to apply drugs to the eye. The disc is placed on the eyeball; the gelatinous material dissolves and the drug is absorbed.
—lamellar adj.

A Dictionary of Nursing