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(US), luster
a. a shiny metallic surface on some pottery and porcelain
b. (as modifier): lustre decoration
2. Mineralogy the way in which light is reflected from the surface of a mineral. It is one of the properties by which minerals are defined


(A French acronym for Synchronous real-time Lucid). Real-time dataflow language for synchronous systems, especially automatic control and signal processing. A Lucid subset, plus timing operators and user-defined clocks.

Designed for automatic control applications. It is based on the idea that automatic control engineers use to analyse, and specify their systems in terms of functions over sequences (sampled signals). It thus seems both safe and cost effective to try to compile directly those descriptions into executable code. A lot of work has been done, so as to get efficient compilation, and also in formal verification. The language has been used in nuclear plant control, and will be used in aircraft control.

["Outline of a Real-Time Data-Flow Language", J.-L. Bergerand et al, Proc IEE-CS Real Time Systems Symp, San Diego, IEEE Dec 1985, pp. 33-42].

["LUSTRE: A Declarative Language for Programming Synchronous Systems", P. Caspi et al, Conf Rec 14th Ann ACM Symp on Princ Prog Langs, 1987].
References in classic literature ?
A soft sound of rising now became audible; the curtain was swept back from the arch; through it appeared the dining-room, with its lit lustre pouring down light on the silver and glass of a magnificent dessert-service covering a long table; a band of ladies stood in the opening; they entered, and the curtain fell behind them.
In the middle of it was a vast pavilion, whose superb saloon had eighty windows, each window having a lustre, lit solely when the Caliph spent the evening there.
As the last breathing notes died on the ear, Delafield turned to meet those eyes which had already secured an unconscious victory, and saw them moistened with a lustre that added to their natural softness.
But candles had been placed in the chandeliers and lustres, and the attendants were so far recovered from surprise as to recollect their use; the oversight was immediately remedied, and in a minute the apartment was in a blaze of light.
The brass candlesticks, the gilt lustres, and the glass chandeliers, whatever might be their keeping as to propriety and taste, were admirably kept as to all the purposes of use and comfort.
Its nature is like opaline doves'-neck lustres, hovering and evanescent.
This has allowed me to further extend my work with lustres as well as to work with enamels and to investigate the making of decals.
Lustres are sought after and can be coloured as golds, coppers, reds and blues or have a colourless sheen like that of mother of pearl.
All types of lustres, except 'resinate lustre' and 'gilding', need reduction firing.
But here was Graham Oldroyd, student of Alan Peascod, who exposed his students to lustres, a revelation to Stern; Oldroyd and Peascod had studied Arabic lustre with Professor Said El-Sadr, in his studio in Fostat, Cairo, Egypt and also with Alan Caiger-Smith.
A detailed and analytical history of lustre pottery is included, commencing from the earliest lustres produced in Iraq in the early ninth century, through Egypt to the Fatimid Period, Syrian lustres, Persian, Moorish, Hispano-Moresque and lustres from Gubbio and Deruta in Italy.
Lustre, in general, can be divided into two groups such as lustres in a reduction environment and lustres in an oxidation environment.