v. t. To make toneless; to deprive of vowel quality. -- De*vo`cal*i*za"tion, n. [1913 Webster]

If we take a high vowel, such as (i) [= nearly i of bit], and devocalize it, we obtain a hiss which is quite distinct enough to stand for a weak (jh). H. Sweet. [1913 Webster]

v. t. [ imp. & p. p. Vocalized p. pr. & vb. n. Vocalizing ] [ Cf. F. vocaliser. ] 1. To form into voice; to make vocal or sonant; to give intonation or resonance to. [ 1913 Webster ]

It is one thing to give an impulse to breath alone, another thing to vocalize that breath. Holder. [ 1913 Webster ]

2. To practice singing on the vowel sounds. [ 1913 Webster ]