Main Entry: ir·ra·di·ate

Pronunciation: \i-ˈrā-dē-ˌāt\

Function: verb

Inflected Form(s): ir·ra·di·at·ed; ir·ra·di·at·ing

Etymology: Latin irradiatus, past participle of irradiare, from in- + radius ray

Date: 1603

transitive verb 1 a : to cast rays of light upon : illuminate b : to enlighten intellectually or spiritually c : to affect or treat by radiant energy (as heat); specifically : to treat by irradiation
2 : to emit like rays of light : radiate <irradiating strength and comfort>intransitive verb archaic : to emit rays : shine

— ir·ra·di·a·tive \-ˌā-tiv\ adjective

— ir·ra·di·a·tor \-ˌā-tər\ noun