reducer

• Substantivo com dois sentidos principais: substância que reduz outra, oxidando-se no processo, muito usada em fotografia; e conexão de tubulação que une dois tubos de diâmetros diferentes.

A noun with two primary meanings: a substance that reduces another substance while being oxidized, often used in photography; and a pipefitting that connects two pipes of different diameters.

1. Chemical reducing agentC1formaltechnical

   A substance that causes reduction in another substance by donating electrons, often used in photography to reduce the density of a negative or print.

   Agente redutor

   • The photographer applied a reducer to lighten the overexposed areas of the print.
   • In the chemical reaction, the reducer was oxidized as it reduced the silver halide.
   • A common reducer in photography is potassium ferricyanide.

   Sinônimosreducing agentreductant

   Antônimosoxidantoxidizer

2. Pipe fittingB2formaltechnical

   A plumbing or piping component that connects two pipes of different diameters, allowing for a change in pipe size.

   Redução de tubulação

   • The plumber used a reducer to connect the larger main pipe to the smaller branch line.
   • A reducer fitting is essential when transitioning between different pipe sizes in a system.
   • He installed a reducer to adapt the 2-inch pipe to the 1-inch faucet.