The term "external shape" is correct and usable in written English.
You can use it to describe the outward appearance of a form or figure, such as, "The external shape of the pyramid was very distinct."
The external shape (habit) of well-developed crystals can be visually studied and classified.
These different types of bone are distinguished more by their external shape than by their basic structure.
Pseudomorph, mineral formed by chemical or structural change of another substance, though retaining its original external shape.
Belugas have a rounded forehead and extremely plastic facial features, enabling the whales to alter the external shape of their head at will.
Often this replacement is so accurate that the internal structure as well as the external shape is faithfully represented; sometimes even the cell structure may be determined.
In order to direct radar energy in the least revealing directions, the external shape of the bomber incorporates a series of complex, large-radius curved surfaces.
Mr. Thomas seems even prouder of the Chrysler Super8 Hemi, a retro concept aimed at reviving the family sedan -- in part by crossing its external shape with the interior flexibility of a minivan.
A blossom, a bouquet of peace and reason…" And all the while of course, while he drinks and thinks, the murder he is born to avenge takes slightly comic external shape.
It didn't work out like that: the external shape has barely changed, and it is now likely to be listed as a historic building, which makes it as much a fixed monument as a Wren church.
Also important in governing the external shape of the range are the constructional processes that are responsible for uplift of the mass of rock from which the range has been sculptured.
The evolution of the external shape continues, with a look at the T-tail configuration.
