pulley
1. A wheel with a grooved rim that a rope or cable runs through, used to change the direction of an applied force and transmit motion in mechanical systems
The rope passed through a pulley to lift the heavy load.
A corda passou por uma polia para levantar a carga pesada.
2. In anatomy, any anatomical structure that functions similarly to a mechanical pulley, especially the trochlea in the eye
The superior oblique muscle passes through the trochlea pulley in the eye.
O músculo oblíquo superior passa pela polia troclear do olho.
3. A system of pulleys used together to provide mechanical advantage
A pulley system can reduce the force needed to lift an object.
Um sistema de polias pode reduzir a força necessária para levantar um objeto.
The word 'polia' is primarily used in technical, mechanical, and medical contexts in both Brazil and Portugal. In Brazil, it is commonly encountered in engineering courses, construction work, and anatomical studies. The term is borrowed from Latin 'polia' and is part of standard technical Portuguese vocabulary across all Portuguese-speaking regions.
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