I think it is 'epidermis'.
Another word for Earth's outer surface is "crust."
Another word for the earth's surface is "ground" or "terrain".
its another word for outer.
The other word for "outer part" is "exterior." It refers to the surface or outer layer of an object or area, distinguishing it from the inner or internal components. Other synonyms include "surface" and "periphery," depending on the context.
Big dipper is an outer space word. Black hole is another outer space word that begins with the letter b.
Pinna is also known as the outer 'Ear'
Tectonic plates
Tectonic plates.
Tectonic plates
The outer surface of the bone is called the periosteum.
The curved outer surface of a circle is the perimeter.
tyre service