delta

/ˈdɛltə/

//ˈdɛltə// noun

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

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

The verdict

“delta” has 6 generated spelling variants in the English index at frequency #5,873. The variants make it a useful spelling check.

#5,873
frequency rank, English
3,470
“D” headwords
6
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The fourth letter of the modern Greek alphabet Δ, δ.

Corpus desk

Index EN-delta · delta · English

delta · rank #5,873 · 6 variants · 20 confusables

  • FREQ-COMMON #5,873
  • LEN-MID 5 letters
  • VOW-2 2 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-MID 6 variants
  • BOOK-MID 3,470
  • PHOTO-FINISH deer

Nearest frequency peer: deer (-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.

Rank peers near misspelling magnet “delta”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “delta” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

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

delta vs dent
60% similar
delta vs DotA
20% similar
delta vs deva
60% similar

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

Key facts for delta
PropertyValue
Headworddelta
LanguageEnglish
Part of speechNoun
IPA/ˈdɛltə/
Letters5
Frequency rank#5,873
Misspellings tracked6
Confusable pairs20
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “delta”

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).deltalands here:

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Same rarity band neighbours include “deer” (#5,872), “demanded” (#5,874), “deadline” (#5,871). Among 3,470 “D” headwords, “delta” is #5,873. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 6 spelling variants around delta (IPA /ˈdɛltə/), anoun. Corpus frequency is #5,873 among 3,470 “D” headwords. Wiktionary lists 15 senses, so context still picks the gloss.

Our generated misspelling index lists 6 likely wrong-spelling variants for delta, with forms such as "ddelta", "dellta", and "deltta". 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 20 confusable-pair relationships, "dent", "DotA", "deva", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From Ancient Greek δέλτα (délta), borrowed from a Phoenician word for "door", ultimately from Proto-Semitic *dalt-. Doublet of dalet. * (river): from the triangular shape of the majuscule Greek letter delta Δ * (USSF): from the delta wing, symbol of the USS… The correct English form is delta, spelled D-E-L-T-A.

Definition

  1. 1
    The fourth letter of the modern Greek alphabet Δ, δ.
  2. 2
    A landform at the mouth of a river where it empties into a body of water.
  3. 3
    Alternative letter-case form of Delta from the NATO/ICAO Phonetic Alphabet.
  4. 4
    The symbol Δ; A change in a quantity, likely from "d" for "difference".
  5. 5
    The rate of change in an option value with respect to the underlying asset's price.
  6. 6
    A value in delta notation indicating the relative abundances of isotopes.
  7. 7
    The set of differences between two versions of a file.
  8. 8
    A small but noticeable effect. Compare epsilon.
  9. 9
    The angle subtended at the center of a circular arc.
  10. 10
    A type of cargo bike that has one wheel in front and two in back.
  11. 11
    The closed figure produced by connecting three coils or circuits successively, end for end, especially in a three-phase system.
  12. 12
    A military unit, nominally headed by a colonel, equivalent to a USAF operations wing, or an army regiment.
  13. 13
    a star that is usually the fourth brightest of a constellation.
  14. 14
    one of four baryons consisting of up and down quarks with a combined spin of 3/2: Δ⁺⁺ (uuu), Δ⁺ (uud), Δ⁰ (udd), or Δ⁻ (ddd)
  15. 15
    Ellipsis of delta variant (variant of the SARS-CoV-2 virus).

Recorded use

Wiktionary examples

These source excerpts show how delta appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. ΔV - "delta vee"(change in velocity, used in rocketry and orbital mechanics)
  2. When you update the file, the system will only save the deltas.

Etymology

From Ancient Greek δέλτα (délta), borrowed from a Phoenician word for "door", ultimately from Proto-Semitic *dalt-. Doublet of dalet. * (river): from the triangular shape of the majuscule Greek letter delta Δ * (USSF): from the delta wing, symbol of the USSF, a triangular wing, shaped like the majuscule Greek letter delta Δ

Synonyms

garrison

This word in other languages

delta(Español)delta(Français)Delta(Deutsch)delta(Português)

Common misspellings

Also misspelled as:

  • ddelta
  • dellta
  • deltta
  • detla
  • dleta
  • edlta

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of delta - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

ddelta1dellta1deltta1detla2dleta2edlta2
Edit distance from "delta"

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 "delta"?
"delta" is spelled D-E-L-T-A. The IPA pronunciation is /ˈdɛltə/.
What does "delta" mean?
As a noun, "delta" means: The fourth letter of the modern Greek alphabet Δ, δ.
What words are commonly confused with "delta"?
"delta" is commonly confused with "dent", "DotA", "deva". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "delta"?
The IPA (International Phonetic Alphabet) transcription for "delta" is /ˈdɛltə/. 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 "delta"?
From Ancient Greek δέλτα (délta), borrowed from a Phoenician word for "door", ultimately from Proto-Semitic *dalt-. Doublet of dalet. * (river): from the triangular shape of the majuscule Greek letter delta Δ * (USSF): from the delta wing, symbol ... 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 "delta", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 5 letters (nearest by frequency rank).

cruel#5,869charm#5,863Julia#5,892valve#5,848

Similar misspelling depth

Headwords with a similar count of attested misspellings (6 here; floor ≥5).

blew6 variantscanon6 variantsdrum6 variantseaten6 variants

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

Source: FrequencyWords open word-frequency list