rectifier

/ˈɹɛktɪfaɪɚ/

//ˈɹɛktɪfaɪɚ// noun

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

"rectifier" is a 9-letter English headword indexed on PlainSpell.

The verdict

“rectifier” is uncommon English (frequency #52,589 among 21,470 “R” headwords), classed as a noun. The kind of spelling people second-guess.

#52,589
frequency rank, English
21,470
“R” headwords

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

Key facts for rectifier
PropertyValue
Headwordrectifier
LanguageEnglish
Part of speechNoun
IPA/ˈɹɛktɪfaɪɚ/
Letters9
Frequency rank#52,589
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “rectifier” 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). rectifier 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

rectifier is uncommon English at frequency #52,589 among 21,470 “R” headwords, classed as anoun, transcribed /ˈɹɛktɪfaɪɚ/. Rarity is why readers land here mid-draft. 4 senses are on record.

rectifier doesn't appear in our generated misspelling index, since its letter sequence doesn't invite the usual edit-distance slips. Our dataset records no confusable match here, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From rectify + -er. The correct English form is rectifier, spelled R-E-C-T-I-F-I-E-R.

Definition

  1. 1
    Something that rectifies.
  2. 2
    A device that converts alternating current into direct current; often a diode.
  3. 3
    An instrument used for determining and rectifying the variations of the compass on board ship.
  4. 4
    The activation function f(x)= max (0,x), where x is the input to a neuron.

Etymology

From rectify + -er.

Antonyms

power inverter

This word in other languages

Gleichrichter(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 "rectifier"?
"rectifier" is spelled R-E-C-T-I-F-I-E-R. The IPA pronunciation is /ˈɹɛktɪfaɪɚ/.
What does "rectifier" mean?
As a noun, "rectifier" means: Something that rectifies.
How do you pronounce "rectifier"?
The IPA (International Phonetic Alphabet) transcription for "rectifier" is /ˈɹɛktɪfaɪɚ/. 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 "rectifier"?
From rectify + -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 “rectifier”

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

  • The one correct English spelling is R-E-C-T-I-F-I-E-R - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈɹɛktɪfaɪɚ/ (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