Vaporization /(văp`ō̇*rī*zȧ"shŭn [or] vā`pẽr*ī*zȧ"shŭn)/

Vap·o·ri·za·tion

Vaporization

n.
  1. The act or process of vaporizing, or the state of being converted into vapor; the artificial formation of vapor; specifically, the conversion of water into steam, as in a steam boiler.