Word forms: discolours
Definitionsregional note: in AM, use discolor
ergative verb & verb If something discolours or if it is discoloured by something else, its original colour changes, so that it looks unattractive. [V] ⇒ A tooth which has been hit hard may discolour. [V n] ⇒ Some oil had seeped out, discolouring the grass. discoloured
graded adjective & adjective ⇒ Some of the prints were badly discoloured. discoloration (dɪskʌləreɪʃən
) uncountable noun ⇒ ...the discoloration of the soil from acid spills.
COBUILD Advanced English Dictionary. Copyright © Harper Collins Publishers