We can talk about how much of the orbit is in the horizontal plane.
Plumb is at 90 degrees to a level or horizontal plane.
It was directly above Jack's machine and descending on a horizontal plane.
The weapon moved at great speed, in an almost horizontal plane.
The elbows stay in the horizontal plane through the shoulders.
A total station can also be used for leveling when set to the horizontal plane.
He did not fight except when we put clothes on him or tried to keep him too long out of the horizontal plane.
The concept of using a liquid to create or find a horizontal plane is not new.
There is some organization in the horizontal plane which gives water its high surface tension.
We mostly tried to impose a battle in the horizontal plane and would not go into a vertical one.
