1. The use of uttered sounds for auditory communication: Cats are very good in communicating with their owners with vocalizations; especially, when they are hungry!
2. The sound made by the vibration of vocal folds modified by the resonance of the vocal tract: The bass, tenor, alto, and soprano are all good examples of vocalization and are very important sections in a chorus.
3. That which is voiced rather than voiceless: The vocalizations of letters exist when they are read out loud; otherwise, reading them silently does not produce any sounds.