free·mi·um /ˈfriːmiəm/ adjectiveadj [only before noun] a freemium service is a service, for example on the Internet, with a basic level that is free and a better level that people can choose to pay for – used in business 〔因特网服务等〕免费加增值的〔指基础功能免费、增值功能收费，用于商业〕
—freemium noun [countableC, uncountableU]