IRRA'DIATE, verb transitive [Latin irradio; in and radio, to shine. See Ray.] 1. To illuminate; to brighten; to make splendid; to adorn with luster. 2. To enlighten intellectually; to illuminate; as, to irradiate the mind. 3. To animate by heat or light. 4. To decorate with shining ornaments. IRRA'DIATE, verb intransitive To emit rays; to shine. IRRA'DIATE, adjective Adorned with shining ornaments.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI