commercial (n.) Look up commercial at Dictionary.com
"an advertisement broadcast on radio or TV," 1935, from commercial (adj.).
commercial (adj.) Look up commercial at Dictionary.com
1680s, "pertaining to trade," from commerce + -al (1). Meaning "paid for by advertisements" (in reference to radio, TV, etc.) is from 1932; meaning "done for the sake of financial profit" (of art, etc.) is from 1871. Related: Commercially.