Webster's Revised Unabridged Dictionary · 1913

Irradiate

Irradiate (ir*rā"di*āt) , transitive verb

[Latin irradiatus, past participle of irradiate. See In- in, and Radiate.]

1.
To throw rays of light upon; to illuminate; to brighten; to adorn with luster.
Thy smile irradiates yon blue fields. — Sir W. Jones
2.
To enlighten intellectually; to illuminate; as, to irradiate the mind. — Bp. Bull
3.
To animate by heat or light. — Sir M. Hale
4.
To radiate, shed, or diffuse.
A splendid facade,... irradiating hospitality. — H. James
5.
To expose to radiation of any kind, especially ionizing radiation; as, to sterilize food by irradiating it with gamma rays; one can cause mutations in bacteria by irradiating them with ultraviolet light.

irradiate , intransitive verb

To emit rays; to shine.

irradiate (ir*rā"di*at) , adjective

[Latin irradiatus, p. p.]

Illuminated; irradiated. — Mason