coloring

noun

1. a digestible substance used to give color to food

   noun.food

   Synonyms colouring food color food coloring food colour food colouring

   Source: WordNet 3.0

2. a visual attribute of things that results from the light they emit or transmit or reflect

   noun.attribute

   Synonyms color colour colouring

   Antonyms achromaticity achromatism colorlessness colourlessness

   Source: WordNet 3.0

3. the act or process of changing the color of something

   noun.act

   Synonyms colouring

   Source: WordNet 3.0

4. The act of applying color to; also, that which produces color.

   noun

   Source: webster1913