- 1illuminate something (formal) to shine light on something Floodlights illuminated the stadium. The earth is illuminated by the sun.
- 2illuminate something (formal) to make something clearer or easier to understand synonym clarify This text illuminates the philosopher's early thinking.
- 3illuminate something to decorate a street, building, etc. with bright lights for a special occasion
- 4illuminate something (literary) to make a person’s face, etc. seem bright and excited synonym light up (3) Her smile illuminated her entire being. See related entries: Excitement Word Origin late Middle English: from Latin illuminat-
BrE BrE//ɪˈluːmɪneɪt//; NAmE NAmE//ɪˈluːmɪneɪt//(less frequent illumine)Verb Forms present simple I / you / we / they illuminate
BrE BrE//ɪˈluːmɪneɪt//; NAmE NAmE//ɪˈluːmɪneɪt//he / she / it illuminates
BrE BrE//ɪˈluːmɪneɪts//; NAmE NAmE//ɪˈluːmɪneɪts//past simple illuminated
BrE BrE//ɪˈluːmɪneɪtɪd//; NAmE NAmE//ɪˈluːmɪneɪtɪd//past participle illuminated
BrE BrE//ɪˈluːmɪneɪtɪd//; NAmE NAmE//ɪˈluːmɪneɪtɪd//-ing form illuminating
BrE BrE//ɪˈluːmɪneɪtɪŋ//; NAmE NAmE//ɪˈluːmɪneɪtɪŋ//Excitement