so·nor·i·ty 
(sə-nôrĭ-tē, -nŏr-)
(sə-nôrĭ-tē, -nŏr-)n. pl. so·nor·i·ties
1. The quality or state of being sonorous; resonance.
2. A sound.
3. Linguistics The degree to which a speech sound is like a vowel. Plosives have the least sonority and vowels have the most.