http://en.wikipedia.org/wiki/Prejudice
Definition
The word prejudice refers to prejudgment: making a decision before becoming aware of the relevant facts of a case or event. The word has commonly been used in certain restricted contexts, in the expression ‘racial prejudice’. Initially this referred to making a judgment about a person based on their race, before receiving information relevant to the particular issue on which a judgment was being made; it came, however, to be widely used to refer to any hostile attitude towards people based on their race. Subsequently the word has come to be widely so interpreted in this way in …