From The Collaborative International Dictionary of English v.0.48 :
Vocalism \Vo"cal*ism\ (v[=o]"kal*[i^]z'm), n.
1. The exercise of the vocal organs; vocalization.
[1913 Webster]
2. A vocalic sound. [R.]
[1913 Webster]
From WordNet (r) 3.0 (2006) :
vocalism
n 1: the system of vowels used in a particular language [syn:
vowel system, vocalism]
2: the sound made by the vibration of vocal folds modified by
the resonance of the vocal tract; "a singer takes good care
of his voice"; "the giraffe cannot make any vocalizations"
[syn: voice, vocalization, vocalisation, vocalism,
phonation, vox]