- Carl Au·gust [kahrl ou-goo st] /kɑrl ˈaʊ gʊst/, 1865–1931, Danish composer.
- Informal. Nielsen rating.
- Carl (August) (karl). 1865–1931, Danish composer. His works include six symphonies and the opera Masquerade (1906)
in reference to popularity ratings of TV and radio programs, 1951, named for U.S. market researcher Arthur Clarke Nielsen (1897-1980), founder of A.C. Nielsen Co., which evaluates viewership based on samplings of receiving sets.