catheter

/ˈkæθɪtə(ɹ)/

//ˈkæθɪtə(ɹ)// noun

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

"catheter" is a 8-letter English headword indexed on PlainSpell.

The verdict

“catheter” has 12 generated spelling variants in the English index at frequency #21,156. The variants make it a useful spelling check.

#21,156
frequency rank, English
43,570
“C” headwords
12
tracked misspellings
1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A small tube inserted into a body cavity to administer a drug, create an opening, distend a passageway, or remove fluid.

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

catheter vs caterer
75% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for catheter
PropertyValue
Headwordcatheter
LanguageEnglish
Part of speechNoun
IPA/ˈkæθɪtə(ɹ)/
Letters8
Frequency rank#21,156
Misspellings tracked12
Confusable pairs1
SourceWiktionary (kaikki.org)

Where “catheter” 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). catheter lands here:

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

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

A misspelling magnet

The generator records 12 spelling variants around catheter (IPA /ˈkæθɪtə(ɹ)/), anoun. Corpus frequency is #21,156 among 43,570 “C” headwords. Dominant gloss: "A small tube inserted into a body cavity to administer a drug, create an opening, distend a passageway, or remove fluid.".

Our generated misspelling index lists 12 likely wrong-spelling variants for catheter, with forms such as "actheter", "cahteter", and "catehter". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 1 confusable-pair relationship, "caterer", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: Borrowed from French cathéter, from Late Latin cathetēr, from Ancient Greek καθετήρ (kathetḗr, “surgical instrument for emptying the bladder”), from καθίημι (kathíēmi, “to descend, let down”) + -τήρ (-tḗr, suffix forming masculine nouns from verbs). The correct English form is catheter, spelled C-A-T-H-E-T-E-R.

Definition

  1. 1
    A small tube inserted into a body cavity to administer a drug, create an opening, distend a passageway, or remove fluid.

Etymology

Borrowed from French cathéter, from Late Latin cathetēr, from Ancient Greek καθετήρ (kathetḗr, “surgical instrument for emptying the bladder”), from καθίημι (kathíēmi, “to descend, let down”) + -τήρ (-tḗr, suffix forming masculine nouns from verbs).

This word in other languages

catéter(Español)cathéter(Français)Katheter(Deutsch)cateter(Português)

Common misspellings

Also misspelled as:

  • actheter
  • cahteter
  • catehter
  • catheetr
  • catheterr
  • cathetre
  • cathetter
  • cathheter
  • cathteer
  • cattheter
  • ccatheter
  • ctaheter

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of catheter - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

actheter2cahteter2catehter2catheetr2catheterr1cathetre2cathetter1cathheter1
Edit distance from "catheter"

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 "catheter"?
"catheter" is spelled C-A-T-H-E-T-E-R. The IPA pronunciation is /ˈkæθɪtə(ɹ)/.
What does "catheter" mean?
As a noun, "catheter" means: A small tube inserted into a body cavity to administer a drug, create an opening, distend a passageway, or remove fluid.
What words are commonly confused with "catheter"?
"catheter" is commonly confused with "caterer". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "catheter"?
The IPA (International Phonetic Alphabet) transcription for "catheter" is /ˈkæθɪtə(ɹ)/. 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 "catheter"?
Borrowed from French cathéter, from Late Latin cathetēr, from Ancient Greek καθετήρ (kathetḗr, “surgical instrument for emptying the bladder”), from καθίημι (kathíēmi, “to descend, let down”) + -τήρ (-tḗr, suffix forming masculine nouns from verbs). 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 “catheter”

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

  • The one correct English spelling is C-A-T-H-E-T-E-R - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈkæθɪtə(ɹ)/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “caterer” - see the side-by-side comparison. catheter vs caterer
  • Browse more English words and confusable pairs in the same reference. English words

Same frequency band

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