Multicultural things are made up of or include more than one ethnic group or culture. Your multicultural food fair might include dishes from Chile, Syria, Sudan, and France.
The world is multicultural, and societies in most countries are multicultural. We all need to learn about people whose religions, skin color, histories, and cultures are completely different from ours — you can get this from multicultural education, like a world history class that includes multicultural perspectives. When the word multicultural was first used in the mid-twentieth century, it often referred to Canada. Multi- means "many," and cultural comes from the Latin cultura, "cultivating."