The policy or practice of giving overt recognition to the cultural needs and contributions of all the groups in a society, esp. of those minority groups regarded as having been neglected in the past.
The characteristics of a society, city etc. which has many different ethnic or national cultures mingling freely; political or social policies which support or encourage such coexistence. [from 20th c.]
Multiculturalism is the practice of giving equal attention to many different backgrounds in a particular setting.
An example of multiculturalism is an honors classroom with students from several different countries and who speak different languages.