titer

/ˈtaɪ.tɚ/

//ˈtaɪ.tɚ// noun

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

"titer" is a 5-letter English headword indexed on PlainSpell.

The verdict

“titer” is uncommon English (frequency #95,519 among 27,828 “T” headwords), classed as a noun. The kind of spelling people second-guess.

#95,519
frequency rank, English
27,828
“T” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The concentration of a substance as determined by titration.

Key facts for titer
PropertyValue
Headwordtiter
LanguageEnglish
Part of speechNoun
IPA/ˈtaɪ.tɚ/
Letters5
Frequency rank#95,519
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “titer” 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). titer 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

titer is uncommon English at frequency #95,519 among 27,828 “T” headwords, classed as anoun, transcribed /ˈtaɪ.tɚ/. Rarity is why readers land here mid-draft. Gloss: "The concentration of a substance as determined by titration.".

No misspelling variants are generated for titer in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. We don't track a confusable pairing for this entry, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: From French titre. Doublet of tilde, title, titlo, tittle, and titulus. The correct English form is titer, spelled T-I-T-E-R.

Definition

  1. 1
    The concentration of a substance as determined by titration.

Etymology

From French titre. Doublet of tilde, title, titlo, tittle, and titulus.

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 "titer"?
"titer" is spelled T-I-T-E-R. The IPA pronunciation is /ˈtaɪ.tɚ/.
What does "titer" mean?
As a noun, "titer" means: The concentration of a substance as determined by titration.
How do you pronounce "titer"?
The IPA (International Phonetic Alphabet) transcription for "titer" is /ˈtaɪ.tɚ/. 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 "titer"?
From French titre. Doublet of tilde, title, titlo, tittle, and titulus. 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 “titer”

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

  • The one correct English spelling is T-I-T-E-R - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈtaɪ.tɚ/ (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 FrequencyWords open word-frequency list