CD3

noun

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

"cd3" is a 2-letter English headword indexed on PlainSpell.

The verdict

“CD3” is uncommon English (frequency #82,161 among 5,599 “C” headwords), classed as a noun. The kind of spelling people second-guess.

#82,161
frequency rank, English
5,599
“C” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - an 80-mm (3-inch) CD (compact disc)

Corpus desk

Index EN-cd3 · CD3 · English

CD3 · rank #82,161 · 0 variants · 0 confusables

  • FREQ-RARE #82,161
  • LEN-MID 3 letters
  • VOW-0 0 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 5,599
  • PHOTO-FINISH cellulitis

Nearest frequency peer: cellulitis (+1 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Long-tail ranks near “CD3”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “CD3” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for CD3
PropertyValue
HeadwordCD3
LanguageEnglish
Part of speechNoun
Letters3
Frequency rank#82,161
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “CD3” in English

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).CD3falls in this rarity band:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Rare peers in the same band: “cellulitis” (#82,162), “cephalic” (#82,164), “Charleroi” (#82,165). Among 5,599 “C” headwords, “CD3” is #82,161. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

CD3 is uncommon English at frequency #82,161 among 5,599 “C” headwords, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.

CD3 doesn't appear in our generated misspelling index, typically a sign the spelling maps closely to how the word sounds. Our dataset records no confusable match here, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: From compact disc. The correct English form is CD3, spelled C-D-3.

Definition

  1. 1
    an 80-mm (3-inch) CD (compact disc)
  2. 2
    a 3-inch CD single

Etymology

From compact disc.

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 "CD3"?
"CD3" is spelled C-D-3.
What does "CD3" mean?
As a noun, "CD3" means: an 80-mm (3-inch) CD (compact disc)
What is the origin of the word "CD3"?
From compact disc. 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "CD3", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 3 letters (nearest by frequency rank).

BBG#82,084DTR#82,246efs#82,257ept#82,271

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list