coloring

noun

1.
a digestible substance used to give color to food
colouring food color food coloring food colour food colouring
Derived from:
color
Exemplifies:
American spelling
2.
a visual attribute of things that results from the light they emit or transmit or reflect
color colour colouring
Derived from:
color
Exemplifies:
American spelling
3.
the act or process of changing the color of something
colouring
Derived from:
color
Exemplifies:
American spelling