círculo

Na Matemática, um círculo ou disco é o conjunto dos pontos internos de uma circunferência. Por vezes, também se chama círculo ao conjunto de pontos cuja distância ao centro é menor ou igual a um dado valor (a que chamamos raio). A área A de um círculo pode ser expressa matematicamente por:onde r é o raio da circunferência e (Pi) uma constante.
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Un círculo es el conjunto de todos los puntos de un plano que se encuentran comprendidos en una circunferencia. Usualmente, el círculo es el área, mientras que la circunferencia es la curva que lo delimita. En Geometría euclidiana, un círculo es el conjunto de todos los puntos en un plano que se encuentran a una distancia fija de un punto fijo, el  centro o foco; dicha distancia recibe el nombre de radio. Además, un círculo es una curva cerrada simple que divide el plano en un interior y un exterior; la región interior del círculo recibe el nombre de disco.
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cercle

n. circle; ring; circumference; round

v. circulate, go round; run

= circle, ring, loop.
Ex: The sets of documents indexed under the two index terms A and B are each represented by a circle.
Ex: This is a sort of microform measles appearing as minute reddish rings.
Ex: Let us empower ourselves to bring those persons who cannot read, or those with a low level of literacy, or those who have been locked out of the information cycle, into the literacy loop.
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* círculo académico = educational circle, academic circle.
* círculo concéntrico = concentric circle.
* círculo de amigos = circle of friends.
* círculo de artistas = artists' circle.
* círculo de expertos = network.
* círculo de lectores = book club, readership.
* círculo de personas afines e influyentes = network.
* círculo de usuarios = circle of users.
* círculo literario = literary circle.
* círculo ovalado = oval.
* círculo polar ártico, el = Arctic Circle, the.
* Círculo Polar, el = Polar Circle, the.
* círculo profesional = network.
* círculos de Euler = Euler circles.
* círculo vicioso = vicious circle.
* convertirse en un círculo vicioso = become + circular.
* cuadrar un círculo = square + circle.
* en los círculos bibliotecarios = in library circles.
* marcar con un círculo = encircle, circle.
* poner un círculo alrededor = circle.
* rodear con un círculo = encircle, circle.
* salir del círculo = break out of + circle.
* señalar con un círculo = circle.
* ser como un círculo = wrap around.
* trazar un círculo alrededor = circle.

1 = memo [memorandum], memorandum [memoranda -pl.; memo -abr.], news-sheet [newsheet], newsletter, circular letter.
Ex: In most cases there was little substitution of e-mail for letters, memos, telephone calls, meetings or travel.
Ex: Among the documents that are worthy of consideration for abstracting are those which convey information that is likely to be difficult to access, such as foreign documents or internal reports and memoranda and other documents which a limited circulation.
Ex: Short abstracts comprising only one or two sentences, for instance, may be valuable in commercial information services, or local government news-sheets of the type produced by public libraries.
Ex: A newsletter is a serial publication consisting of one or a few printed sheets containing news and/or information of interest to a special group.
Ex: The computer is also programmed to print out circular letters and address labels to obtain up-dated information, which are sent to agencies every six months.

2 = roundabout, circular, rotary, cyclic.
Ex: 'I think that's about it, isn't it, Malcolm?' she said, rubbing her hands with a roundabout motion.
Ex: Products under threat include; greeting cards, circulars, information sheets, newspapers and magazines.
Ex: In 1895 a good London bindery would have the following machines: hand-fed folding machines, sewing machines, nipping machines (for pressing the sewn books before casing-in), cutting machines, rounding machines, backing machines, straight-knife trimming machines (guillotines), rotary board-cutting machines, power blocking presses, and hydraulic standing presses.
Ex: This algorithm handles cyclic graphs without unfolding the cycles nor looping through them.
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* bandeja circular para diapositivas = carousel.
* presentación circular de títulos = wrap-around.
* sierra circular = buzz saw, circular saw.
* tesauro circular = circular thesaurus.

3 = make + the rounds, range, pump.
Ex: You may have seen the lines making the rounds of library e-mail: 'A Zen librarian searched for 'nothing' on the Internet and received 28 million hits'.
Ex: We will be bringing scholars from all over the world both to range widely in our multiform collections and put things together rather than just take them apart.
Ex: All air entering the building should be pumped through tanks of water to remove pollutants.
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* apto para circular = roadworthy.
* circular de uno a otro = flow + back and forth.
* circular libremente = wander + at large.
* circular por = navigate (through).
* hacer circular = pass around.
* hacer circular por = circulate round.