adj.
Pronunciation: ' l ə s-tr ə s
Function: adjective
Date: 1601
1 : reflecting light evenly and efficiently without glitter or sparkle <a lustrous satin> <the lustrous glow of an opal>
2 : radiant in character or reputation : ILLUSTRIOUS
synonyms see BRIGHT
– lus · trous · ly adverb
– lus · trous · ness noun