of, relating to, or shaped like a triangle; having three angles; triangular. 2. Crystallography. having threefold symmetry. Origin of trigonal.
An online survey conducted in the U.S. points out that the most popular music genre in the U.S. is rock, with 40 percent of respondents choosing this option. The second and third most listened to music genres are oldies and country respectively, while hip hop/rap is favored by a smaller niche of American listeners.
Hyponyms (each of the following is a kind of musical genre): African-American music; black music (music created by African-American musicians; early forms were songs that had a melodic line and a strong rhythmic beat with repeated choruses).