Vocalize

['vəʊk(ə)laɪz] or ['vokə'laɪz]

(verb.) utter speech sounds.

(verb.) pronounce as a vowel; 'between two consonants, this liquid is vowelized'.

(verb.) sing (each note a scale or in a melody) with the same vowel.

Checked by Jennie--From WordNet

(v. t.) To form into voice; to make vocal or sonant; to give intonation or resonance to.

(v. t.) To practice singing on the vowel sounds.

Edited by Alison