grad-, -grade, -gred, -gree, -gress

(Latin: walk, step, take steps, move around; walking or stepping)

Ubi non est lex, ibi non est transgressio, quoad mundum. (Latin statement)
Translation: "Where there is no law, there is no transgression, so far as it relates to the world."
1. Moving on the tips of the digits.
2. A reference to an animal that walks on an enlarged nail, or hoof, on each leg; such as, a horse.
Uniti progrediemur.
United we shall go forward.

Motto of Gabon Republic.

Moving in a wormlike manner.
voltage gradient
1. The voltage per unit length along a resistor or other conductive path.
2. The electric field in a region, defined as the potential difference between two points divided by the distance between them.