Meaning of DISCOLOR in English

DISCOLOR

I. dis ‧ col ‧ or /dɪsˈkʌlə $ -ər/ BrE AmE verb [I, T]

the American spelling of ↑ discolour

II. dis ‧ col ‧ our BrE AmE British English , discolor American English /dɪsˈkʌlə $ -ər/ verb [intransitive and transitive]

to change colour, or to make something change colour, so that it looks unattractive:

Once cut, apples quickly discolour.

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.