Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “luster”


noun [U] (BRIGHTNESS)   /ˈlʌs·tər/
the brightness of a smooth or shiny surface : The polished furniture had a rich luster. lustrous    /ˈlʌs·trəs/ adjective [not gradable] This conditioner will give your hair a lustrous glow .
(Definition of luster noun (BRIGHTNESS) from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of luster

More American English definitions for “luster”

Word of the Day

prenuptial agreement

an official document signed by two people before they get married that says what will happen to their possessions and/or children if they divorce (= officially stop being married)

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More