The primary significance test is a legal standard used to determine whether a trademark has become generic in the eyes of the public, which can lead to its loss of protection. This test assesses whether the primary significance of a term to the relevant public is as a source identifier for a specific product or service, or if it has come to signify a general class of products. The outcome of this test can have serious implications for trademark rights, particularly when evaluating claims of abandonment or genericide.