noun, plural lus·trums, lus·tra [luhs-truh]. /ˈlʌs trə/.
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Origin of lustrum
Example sentences from the Web for lustrum
Thus passed away two lustra of her life, and as yet my daughter remained nameless upon the earth.The Works of Edgar Allan Poe|Edgar Allan Poe
Lustra-cellulose prepared by spinning a solution of cellulose in concentrated chloride of zinc.
Concentrated nitric acid attacks the natural silks powerfully in the cold; the lustra-celluloses dissolve on heating.
The China silk was dissolved by this reagent; Tussah silk and the lustra-celluloses entirely resisted its action.
Millon's reagent, at the boiling solution, colours the natural silks violet: the lustra-celluloses give no reaction.