The crust is the outer hard layer of the Earth.
The outer layer - what we look like - can work for us in another way too.
If you're out too far from the center, you become part of the frozen outer layer.
They quickly began putting on the outer layers for their legs.
During the early 20th century the outer layer of the keep was still visible.
Its outer layers began to expand as a result of the increased heat and pressure.
That said, what are the best outer layers to use?
But he was standing, watching, with those dark eyes already seeing beyond the outer layers.
The star's outer layers on one side would be stripped off.
The outer layer of the kidney did not break open.
This would pollute the star's external layers, resulting in a higher than normal metallicity.
In fungi and lichens, the sorus is surrounded by an external layer.
The external layer of the body wall is thin.
The adjective internal is used in opposition to the external granular layer of the cortex.
Imagine if the external layers of your skin were a sentient life-form.
Washing skin repeatedly can damage the protective external layer and cause transepidermal loss of water.
First she'd pulled back the external layer of heavy-duty plastic.
Within his private room he crossed to the window, cleared it, frowned at the external layer of frost.
Many have several layers of sack papers, printed external layer and inner plies.
A frustule is the hard and porous cell wall or external layer of diatoms.
