molecular layer
/məˌlɛkjʊlə ˈleɪə/noun
1A layer of molecules.
2 Histology. Any of several layers of neural tissue composed chiefly of the terminal branchings of axons and dendrites, with relatively few cell bodies (also called plexiform layer); especially (a) either of two such layers of the retina; (b) the outermost layer of the cerebral and cerebellar cortex.
Origin
Mid 19th century; earliest use found in Scientific American. From molecular + layer.