1. (noun)commercial, commercial message a commercially sponsored ad on radio or television
2. (adj)commercial connected with or engaged in or sponsored by or used in commerce or commercial enterprises
"commercial trucker"; "commercial TV"; "commercial diamonds"
3. (adj)commercial of or relating to commercialism "a commercial attache"; "commercial paper"; "commercial law"
4. (adj)commercial, commercial-grade of the kind or quality used in commerce; average or inferior "commercial grade of beef"; "commercial oxalic acid"