The definition of Discrimination is to treat individuals or a group of people differently because of race, religion, gender, age, disability, physical demeanour, nationality, and sexual orientation.
What is discrimination I know that it is when blacks and whites couldn't get along so they had different schools and water fountains.
Discrimination in medical terms is to be able to tell the difference between two things. For instance, two point discrimination is being able to tell the difference between two paper clip ends touching your skin, and one paper clip end touching your skin.