Available Definitions:
1) a. - Giving sound when struck; resonant; as, sonorous metals.
2) a. - Loud-sounding; giving a clear or loud sound; as, a sonorous voice.
3) a. - Yielding sound; characterized by sound; vocal; sonant; as, the vowels are sonorous.
4) a. - Impressive in sound; high-sounding.
5) a. - Sonant; vibrant; hence, of sounds produced in a cavity, deep-toned; as, sonorous rhonchi.