Etymology
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commercial (adj.)

1680s, "engaging in trade," from commerce + -al (1). Meaning "done for the sake of financial profit" (of art, etc.), "prepared for the market or as an article of trade" is from 1871. Meaning "paid for by advertisements" (in reference to radio, TV, etc.) is from 1932. Related: Commercially.

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commercial (n.)

"an advertisement broadcast on radio or TV," 1935, from commercial (adj.). Earlier as a noun it was short for commercial traveler (1855).

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commercialism (n.)

1849, "principles and practice of commerce," from commercial (adj.) + -ism. By 1889 as "predominance of commercial pursuits in a place or community."

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commercialize (v.)

"subject to the principles and practices of commerce," 1830, from commercial (adj.) + -ize. Related: Commercialized; commercializing.

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infomercial (n.)
1983, from info- + commercial (n.). Before the televised infomercial was the newspaper advertorial (1961).
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oleo (n.)
1884, commercial shortening of oleomargarine.
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Bros. 
common commercial abbreviation of Brothers.
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-ola 
commercial suffix, probably originally in pianola (q.v.).
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sox (n.)
altered plural of sock (n.1), 1905, originally in commercial jargon.
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sponsor (v.)

1882, "to favor or support," from sponsor (n.). Commercial broadcasting sense is from 1931. Related: Sponsored; sponsoring.

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