From The Collaborative International Dictionary of English v.0.44 [gcide]:
Commercial \Com*mer"cial\, adjective [Cf. F. commercial.] Of or pertaining to commerce; carrying on or occupied with commerce or trade; mercantile; as, commercial advantages; commercial relations. ''Princely commercial houses.'' --Macaulay.
From WordNet (r) 2.0 [wn]:
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
40 Moby Thesaurus words for "commercial": banausic, breadwinning, broadcast, business, businesslike, canned show, commercial announcement, commercial program, electrical transcription, industrial, materialistic, mercantile, merchant, moneymaking, network show, newscast, plug, practical, prosaic, radio fare, radiobroadcast, realistic, rebroadcast, rerun, retail, serial, soap opera, sound effects, sportscast, spot, spot announcement, sustainer, taped program, trade, trading, utilitarian, wholesale, workaday, workday, working
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