The state of being discoloured; loss or change of colour; discolouration. Also: a discolouration. Also figurative.

The action or an act of becoming discoloured; discolouration. Also: a discolouration.

The action or an act of becoming discoloured; the state or condition of being discoloured; loss or change of colour.

the state or quality of being discoloured.

The action or process of transcolouring; change of colour.

The action or fact of being discoloured; discolouration. Also: a discolouration.

The action or fact of being discoloured; = discolouration, n. Also: an instance of this.

Science. Change of colour produced by heating. Obsolete.

Chemistry. Change of the colour of a substance by heating. (In quots. apparently an alteration of metachromatism, the term used by William…

In animals which possess chromatophores (esp. certain lizards, frogs, fish, and cephalopod molluscs): the ability to change skin colour.

change of colour.

reversible change in the optical absorption and emission spectra of molecules due to the application of an electric field; the property of…