How do you spell Irradiate

Available Definitions:
1)  v. t. - To throw rays of light upon; to illuminate; to brighten; to adorn with luster.
2)  v. t. - To enlighten intellectually; to illuminate; as, to irradiate the mind.
3)  v. t. - To animate by heat or light.
4)  v. t. - To radiate, shed, or diffuse.
5)  v. i. - To emit rays; to shine.
6)  a. - Illuminated; irradiated.