Definition of plexiform layer in US English:

plexiform layer

noun

Anatomy
  • Either of the two layers of the retina separated by the inner nuclear layer, the outer one containing synapses between the rods and cones and the neurons of the nuclear layer, and the inner one containing synapses between these neurons and ganglion cells; also called molecular layer.

Origin

Mid 19th century; earliest use found in Quain's Elements of Anatomy. After French couche plexiforme ( externe, interne).