Definition of discolour verb from the Oxford Advanced Learner's Dictionary

 

discolour

 verb
(especially US English discolor)verb
BrE BrE//dɪsˈkʌlə(r)//
 
; NAmE NAmE//dɪsˈkʌlər//
 
[intransitive, transitive]Verb Forms present simple I / you / we / they discolour
BrE BrE//dɪsˈkʌlə(r)//
 
; NAmE NAmE//dɪsˈkʌlər//
 
he / she / it discolours
BrE BrE//dɪsˈkʌləz//
 
; NAmE NAmE//dɪsˈkʌlərz//
 
past simple discoloured
BrE BrE//dɪsˈkʌləd//
 
; NAmE NAmE//dɪsˈkʌlərd//
 
past participle discoloured
BrE BrE//dɪsˈkʌləd//
 
; NAmE NAmE//dɪsˈkʌlərd//
 
-ing form discolouring
BrE BrE//dɪsˈkʌlərɪŋ//
 
; NAmE NAmE//dɪsˈkʌlərɪŋ//
 
 
jump to other results
to change colour, or to make the colour of something change, in a way that makes it look less attractive Plastic tends to discolour with age. discolour something The pipes were beginning to rust, discolouring the water. Word Origin late Middle English: from Old French descolorer or medieval Latin discolorare, from des-, dis- (expressing reversal) + Latin colorare ‘to colour’.