reducer

/ɹɪˈdusɚ/

//ɹɪˈdusɚ// noun

By · According to Wiktionary data (CC BY-SA) ·

"reducer" is a 7-letter English headword indexed on PlainSpell.

The verdict

“reducer” is uncommon English (frequency #65,453 among 21,470 “R” headwords), classed as a noun. The kind of spelling people second-guess.

#65,453
frequency rank, English
21,470
“R” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Something or someone that reduces.

Key facts for reducer
PropertyValue
Headwordreducer
LanguageEnglish
Part of speechNoun
IPA/ɹɪˈdusɚ/
Letters7
Frequency rank#65,453
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “reducer” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). reducer lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

reducer is uncommon English at frequency #65,453 among 21,470 “R” headwords, classed as anoun, transcribed /ɹɪˈdusɚ/. Rarity is why readers land here mid-draft. 7 senses are on record.

The misspelling generator found no plausible variants for reducer, a straightforward case of a spelling with little room for common typos. We don't track a confusable pairing for this entry, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From reduce + -er. The correct English form is reducer, spelled R-E-D-U-C-E-R.

Definition

  1. 1
    Something or someone that reduces.
  2. 2
    A reducing agent.
  3. 3
    A hydraulic device for reducing pressure and hence increasing movement, used to transmit the load from the hydraulic support of the lower shackle to the lever weighing apparatus in some kinds of heavy testing machine.
  4. 4
    A liquid used in the process of developing a negative to reduce its darkness.
  5. 5
    A component used to connect two pipes of different bores.
  6. 6
    A function that takes state and action as arguments and returns the next state of the app.
  7. 7
    The reduction of the contribution to a football game of a more talented opponent by intimidation using a brutal tackle.

Etymology

From reduce + -er.

This word in other languages

reductor(Español)réducteur(Français)Reduzierung(Deutsch)

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "reducer"?
"reducer" is spelled R-E-D-U-C-E-R. The IPA pronunciation is /ɹɪˈdusɚ/.
What does "reducer" mean?
As a noun, "reducer" means: Something or someone that reduces.
How do you pronounce "reducer"?
The IPA (International Phonetic Alphabet) transcription for "reducer" is /ɹɪˈdusɚ/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "reducer"?
From reduce + -er. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “reducer”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is R-E-D-U-C-E-R - every other letter order is a misspelling in standard orthography.
  • Say it as /ɹɪˈdusɚ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words

Other uncommon English words near this rank

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list