Multivalued dependency occurs when there are more than one independent multivalued attributes in a table.
For example: Consider a bike manufacture company, which produces two colors (Black and white) in each model every year.
Here columns manuf_year and color are independent of each other and dependent on bike_model. In this case these two columns are said to be multivalued dependent on bike_model. These dependencies can be represented like this:
bike_model ->> manuf_year
bike_model ->> color