index term

noun

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

The verdict

“index term” is outside the top-ranked English vocabulary, used as a noun - the kind of word writers most often double-check.

Unranked
below top-frequency English
10
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A term associated with particular documents in an index used for document retrieval; typically, a term that captures the essential meaning of a document.

Key facts for index term
PropertyValue
Headwordindex term
LanguageEnglish
Part of speechNoun
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “index term” sits in English frequency

index term falls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for index term is 10 letters long, classified as a noun. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "A term associated with particular documents in an index used for document retrieval; typically, a term that captures the essential meaning of a document.".

No generated misspelling entries exist for index term in our index, a sign its spelling follows regular English conventions. Our confusable-pair dataset has no match for it, since nothing in our dataset looks or sounds close enough to cause mix-ups.

This entry's etymology isn't recorded, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct English form is index term, spelled I-N-D-E-X- -T-E-R-M.

Definition

  1. 1
    A term associated with particular documents in an index used for document retrieval; typically, a term that captures the essential meaning of a document.

Synonyms

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "index term"?
"index term" is spelled I-N-D-E-X- -T-E-R-M.
What does "index term" mean?
As a noun, "index term" means: A term associated with particular documents in an index used for document retrieval; typically, a term that captures the essential meaning of a document.
What language does "index term" come from?
"index term" is a English word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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 “index term”

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

  • The one correct English spelling is I-N-D-E-X- -T-E-R-M - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words
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