Broad definitions:
* "The coexistence of diverse cultures": This focuses on the simple presence of multiple cultures within a society.
* "The appreciation and respect for different cultures": This emphasizes the positive attitudes towards cultural diversity.
* "The integration of different cultures": This highlights the interaction and blending of cultures, suggesting a sense of unity.
More nuanced definitions:
* "The recognition and celebration of cultural differences": This emphasizes the value and uniqueness of different cultural practices.
* "The pursuit of social justice and equality for all cultures": This connects multiculturalism to social justice issues and the fight against discrimination.
* "The dynamic process of intercultural exchange and understanding": This emphasizes the ongoing interaction and learning that occurs between different cultures.
Ultimately, the best phrase to describe multiculturalism depends on the context and the specific message you want to convey.