How do you spell Ignite

Available Definitions:
1)  v. t. - To kindle or set on fire; as, to ignite paper or wood.
2)  v. t. - To subject to the action of intense heat; to heat strongly; -- often said of incombustible or infusible substances; as, to ignite iron or platinum.
3)  v. i. - To take fire; to begin to burn.