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reduction

decrease / price cut / chemical reaction / thickened liquid

/ɹiˈdɑk.ʃən/

[C/U] Both
pl: reductions

Countable when referring to a specific discount on a price tag ('a 20% reduction') or a concentrated cooking sauce ('a balsamic reduction'). Uncountable when describing the general process of making something smaller, such as 'the reduction of carbon emissions'.

💬Casual Conversation

🎬Chloe is staring at her phone in her dorm room, scrolling through emails.
Chloe Smith

Ugh, just got the email. Another 'cost reduction' for my financial aid.

Ugh, just got the email. Another 'cost reduction' for my financial aid.

Chloe Smith
Leo Smith
Leo Smith

Skill issue, sis. Time to get a real job.

Skill issue, sis. Time to get a real job.

Meanings

Noundecrease

The action or fact of making a specified thing smaller or less in amount, degree, or size.

The company announced a significant reduction in staff to cut costs.

Nounprice cut

A decrease in the price of something.

There is a 20% reduction on all winter clothing this week.

Nounchemical reaction

In chemistry, the reaction by which a substance gains electrons or loses oxygen.

The reduction of iron oxide occurs in the blast furnace.

Nounthickened liquid

In cooking, the process of thickening a liquid by boiling it until some of the water evaporates.

Simmer the sauce for ten minutes to create a balsamic reduction.

Examples

The new policy led to a significant reduction in carbon emissions.

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The store is offering a ten percent reduction on all shoes.

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The chemical reduction of the metal requires a high temperature.

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The chef prepared a red wine reduction to glaze the steak.

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Collocations & Compounds

size reduction

The process of making something smaller in size.

The size reduction of the sample was necessary for analysis.

cost reduction

The act of lowering the price or expense of something.

The company implemented several measures for cost reduction.

tax reduction

A decrease in the amount of tax that has to be paid.

The government announced a significant tax reduction for small businesses.

noise reduction

The process of decreasing the level of unwanted sound.

This new technology offers advanced noise reduction capabilities.

volume reduction

The process of making something occupy less space.

The engineer focused on volume reduction to make the device more portable.

Etymology

The word 'reduction' comes from the Latin word 'reductio', meaning 'a leading back' or 'restoration'. It entered English in the late 14th century, initially referring to the act of bringing something back to a former state or condition. Over time, its meaning broadened to include the act of making something smaller, less, or simpler, as well as processes in chemistry and mathematics.

Related Words

Last Updated: July 7, 2026Report an Error