diode
/ˈdaɪ.əʊd/
"diode" is a 5-letter English headword indexed on PlainSpell.
The verdict
“diode” is a moderately-common English word, ranked #26,755 in English word frequency and used as a noun.
- #26,755
- frequency rank, English
- 5
- letters
- 6
- tracked misspellings
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - An electronic device that allows current to flow in one direction only; used chiefly as a rectifier.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | diode |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈdaɪ.əʊd/ |
| Letters | 5 |
| Frequency rank | #26,755 |
| Misspellings tracked | 6 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “diode” sits in English frequency
Spelling & Dictionary Insight
The English entry for diode is 5 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈdaɪ.əʊd/. Corpus data places it at rank #26,755 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "An electronic device that allows current to flow in one direction only; used chiefly as a rectifier.".
Our generated misspelling index lists 6 likely wrong-spelling variants for diode, with forms such as "ddiode", "didoe", and "diodde". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 20 confusable-pair relationships, "doe", "DOD", "done", and more, where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: From di- (“two”) + -ode. Learned formation, coined by William Henry Eccles in 1919, after Ancient Greek δίοδος (díodos, “passage through”), which however is formed not with δι- (di-, “two”) but with δια- (dia-, “through”). The correct English form is diode, spelled D-I-O-D-E.
Definition
- 1An electronic device that allows current to flow in one direction only; used chiefly as a rectifier.
Etymology
From di- (“two”) + -ode. Learned formation, coined by William Henry Eccles in 1919, after Ancient Greek δίοδος (díodos, “passage through”), which however is formed not with δι- (di-, “two”) but with δια- (dia-, “through”).
This word in other languages
Common misspellings
Also misspelled as: ddiode,didoe,diodde,dioed,doide,idode
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of diode - 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.
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
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Using “diode”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is D-I-O-D-E - every other letter order is a misspelling in standard orthography.
- Say it as /ˈdaɪ.əʊd/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “doe” - see the side-by-side comparison. diode vs doe
- 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.