A person or thing that makes something smaller or less

• Something that lowers amount, size, or intensity

A substance that donates electrons, reducing another species

A pipe fitting that connects different diameters

A gearbox that lowers rotational speed and increases torque

A device that reduces fluid or gas pressure to a set level

A solution used to lighten an over-dense negative or print

In state management, a function returning next state from state and action

A transition strip that bridges different floor heights

In soccer, an early hard tackle meant to intimidate a skilled opponent

A hydraulic device reducing pressure to increase movement in heavy testing machines