Skip to the word

Added 9 October 2026

reduction

/ɹɪˈdʌk.ʃən/ noun

Latin root: reductiō Wiktionary

noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about reduction at Wordnik → Where our words come from →

The act of decreasing or reducing something.
Any process in which electrons are added to an atom or ion (as by removing oxygen or adding hydrogen); always occurs accompanied by oxidation of the reducing agent.
The act of reducing complexity.

Origin

From Middle English reduccion, a borrowing from Old French reducion, from Latin reductiō, reductiōnem. Equivalent to reduce + -tion.

From Wiktionary, via Kaikki.org (CC BY-SA)

Back to today's word