1.
Discrimination is the practice of treating one person or group of people less fairly or less well than other people or groups.
She is exempt from sex discrimination laws.
...discrimination against immigrants.
N-UNCOUNT: usu with supp
2.
Discrimination is knowing what is good or of high quality.
They cooked without skill and ate without discrimination.
N-UNCOUNT
3.
Discrimination is the ability to recognize and understand the differences between two things.
...colour discrimination.
N-UNCOUNT: usu with supp