q-e-d
Definition, pronunciation, etymology, and usage for the English word. Free spelling reference powered by Wiktionary.
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5 characters
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English
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Detailed reference entry for the English word "q-e-d", 5-letters, with pronunciation in International Phonetic Alphabet notation, etymology traced through Germanic and Romance roots where applicable, common misspelling variants catalogued from Hunspell error dictionaries, and usage frequency ranked against the top 100,000 English words in the Wordfreq corpus. PlainSpell covers English, Spanish, Portuguese, French, and German spelling with confusable-pair detection that highlights visually and phonetically similar words. This entry for "q-e-d" includes synonyms, antonyms, homophones, and cross-language translation pointers sourced from Wiktionary via the kaikki.org extract. Whether you are verifying the correct spelling of "q-e-d" for academic writing, checking homophone confusion, or exploring etymological origins, this page provides a citation-backed, free reference that requires no sign-up.
Q.E.D. is aEnglishphrase. It means: Initialism of quod erat demonstrandum (“what was to be proved; what was to be demonstrated”): placed at the end of a mathematical proof to show that the theorem under discussion is proved. Pronounced /ˌkjuːiːˈdiː/.
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Browse all word comparisons →| Property | Value |
|---|---|
| Headword | Q.E.D. |
| Language | English |
| Part of speech | Phrase |
| IPA | /ˌkjuːiːˈdiː/ |
| Letters | 6 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
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Spelling & Dictionary Insight
The English entry for Q.E.D. is 6 letters long, classified as aphrase, and transcribed in the International Phonetic Alphabet as /ˌkjuːiːˈdiː/. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader.Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.
No frequent misspelling variants are recorded for Q.E.D. in our index, suggesting the orthography either follows predictable English patterns or the word is uncommon enough that typo corpora lack signal.It is not paired with a close-neighbour confusable in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: From Late Latin QED, from Latin quod erat demonstrandum. Root origin matters for spelling because borrowed morphemes (Greek, Latin, Old French, Old English) carry their source-language orthographic conventions into modern English, which is why historical etymology is often the cleanest predictor of whether a cluster like "-ough", "-eau", or "-tion" will appear. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is Q.E.D., spelled Q-.-E-.-D-., and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.
Definition
- 1Initialism of quod erat demonstrandum (“what was to be proved; what was to be demonstrated”): placed at the end of a mathematical proof to show that the theorem under discussion is proved.
- 2Used to indicate that an argument or proposition is proved by the existence of some fact or scenario.
Etymology
From Late Latin QED, from Latin quod erat demonstrandum.
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Nearby English words
Other entries that begin with the letter Q in our English index: