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compact

   Also found in: Dictionary/thesaurus, Medical, Legal, Financial, Acronyms, Wikipedia, Hutchinson 0.04 sec.
compact1
1. Logic (of a relation) having the property that for any pair of elements such that a is related to b, there is some element c such that a is related to c and c to b, as less than on the rational numbers.
2. US and Canadian (of a car) small and economical
3. US and Canadian a comparatively small and economical car
4. Metallurgy a mass of metal prepared for sintering by cold-pressing a metal powder
compact2
Law an official contract or agreement
compact [′käm‚pakt]
(metallurgy)
A briquette made by the compression of metal powder, with or without the addition of nonmetallic constituents.
compact - 1. (Or "finite", "isolated") In domain theory, an element d of a cpo D is compact if and only if, for any chain S, a subset of D,

d <= lub S => there exists s in S such that d <= s.

I.e. you always reach d (or better) after a finite number of steps up the chain.

("<=" is written in LaTeX as \sqsubseteq).


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"- suddenly a round compact cloud of smoke was seen merging from violet into gray and milky white, and "boom
War and Peace by Tolstoy, Leo View in context
He appeared to be a man about forty years of age, with fine, handsome features, and a tall, well-shaped figure; his hair and whiskers were light, his forehead compact and unwrinkled, his face rather pale, his teeth magnificent.
Around The World In Eighty Days by Verne, Jules View in context
born to help other men, always ready to sacrifice himself for the safety of the weak, as if God had only given him strength for that purpose; when dying he only thought he was carrying out the conditions of his compact with Aramis, a compact, however, which Aramis alone had drawn up, and which Porthos had only known to suffer by its terrible solidarity.
The Man in the Iron Mask by Dumas, Alexandre View in context
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