CT

noun

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

"ct" is a 2-letter English headword indexed on PlainSpell.

The verdict

“CT” is a regularly-used English word, ranked #5,951 in English word frequency and used as a noun.

#5,951
frequency rank, English
2
letters
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Initialism of computed tomography.

Visual similarity to commonly confused words

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

CT vs CV
50% similar
CT vs CU
50% similar
CT vs CW
50% similar

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

Key facts for CT
PropertyValue
HeadwordCT
LanguageEnglish
Part of speechNoun
Letters2
Frequency rank#5,951
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “CT” 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). CT lands here:

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

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

Spelling & Dictionary Insight

The English entry for CT is 2 letters long, classified as a noun. Corpus data places it at rank #5,951 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 7 distinct senses for this headword, so context determines which meaning a reader should apply.

The misspelling generator found no plausible variants for CT, since its letter sequence doesn't invite the usual edit-distance slips. It also participates in 20 confusable-pair relationships, "CV", "CU", "CW", and more, where similar look or sound leads writers to substitute one word for another in context.

No explicit etymology string is stored for this entry, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is CT, spelled C-T.

Definition

  1. 1
    Initialism of computed tomography.
  2. 2
    Initialism of computed tomography.
  3. 3
    Initialism of cold turkey.
  4. 4
    Initialism of cocktease.
  5. 5
    Initialism of camel toe.
  6. 6
    Abbreviation of combat team.
  7. 7
    Initialism of Chlamydia trachomatis; chlamydia.

Synonyms

computed tomographycomputed axial tomographyCATCT scanCAT scancomputed tomography scancomputed axial tomography scan

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 "CT"?
"CT" is spelled C-T.
What does "CT" mean?
As a noun, "CT" means: Initialism of computed tomography.
What words are commonly confused with "CT"?
"CT" is commonly confused with "CV", "CU", "CW". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What language does "CT" come from?
"CT" 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 “CT”

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

  • The one correct English spelling is C-T - every other letter order is a misspelling in standard orthography.
  • Don't mix it up with “CV” - see the side-by-side comparison. CT vs CV
  • 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