(geology) A stratum laid down prior to that of a saline layer (formed from encroachment by a sea)

A surname.

plural of Layden

A surname.

A surname.

The stratum basale and stratum spinosum of the skin, or sometimes just one of the two.

Synonym of Kennelly-Heaviside layer

A layer of ionized gas occurring between roughly 90–150 km (56–93 mi) above the ground. It reflects medium-frequency radio waves, and thus enables them to be propagated beyond the horizon.

(machine learning) The layer or layers of neurons between the input layer and the output layer in a neural network.

Alternative spelling of layer cake