v.
Pronunciation: ' i-l ə s- ˌ tr ā t also i- ' l ə s-
Function: verb
Inflected Form: -trat · ed ; -trat · ing
Etymology: Latin illustratus, past participle of illustrare, from in- + lustrare to purify, make bright ― more at LUSTER
Date: 1526
transitive verb
1 obsolete a : ENLIGHTEN b : to light up
2 a archaic : to make illustrious b obsolete (1) : to make bright (2) : ADORN
3 a : to make clear : CLARIFY b : to make clear by giving or by serving as an example or instance c : to provide with visual features intended to explain or decorate < illustrate a book>
4 : to show clearly : DEMONSTRATE
intransitive verb : to give an example or instance
– il · lus · tra · tor \ ' i-l ə s- ˌ tr ā -t ə r also i- ' l ə s- \ noun