Vocalize /(vō"kal*īz)/

Vo·cal·ize

Vocalize

v. t.

imp. & p. p. Vocalized; p. pr. & vb. n. Vocalizing

  1. To form into voice; to make vocal or sonant; to give intonation or resonance to.
    It is one thing to give an impulse to breath alone, another thing to vocalize that breath.
    — Holder.
  2. To practice singing on the vowel sounds.