1. Giving sound when struck; resonant; as, sonorous metals.
2. Loud-sounding; giving a clear or loud sound; as, a sonorous voice.
3. Yielding sound; characterized by sound; vocal; sonant; as, the vowels are sonorous.
4. Impressive in sound; high-sounding.
The Italian opera, amidst all the meanness and familiarty of the thoughts, has something beautiful and sonorous in the expression. --Addison.
There is nothing of the artificial Johnsonian balance in his style. It is as often marked by a pregnant brevity as by a sonorous amplitude. --E. Everett.
5. Med. Sonant; vibrant; hence, of sounds produced in a cavity, deep-toned; as, sonorous rhonchi.
Sonorous figures Physics, figures formed by the vibrations of a substance capable of emitting a musical tone, as when the bow of a violin is drawn along the edge of a piece of glass or metal on which sand is strewed, and the sand arranges itself in figures according to the musical tone. Called also acoustic figures.
Sonorous tumor Med., a tumor which emits a clear, resonant sound on percussion.
-- So*no*rous*ly, adv. -- So*no*rous*ness, n.