duodenum

Spelling & Dictionary Insight

The English entry for duodenum is 8 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˌdjuːə(ʊ)ˈdiːnəm/. Corpus data places it at rank #68,168 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "The first part of the small intestine, starting at the lower end of the stomach and extending to the jejunum.".

No misspelling variants are generated for duodenum in our index, suggesting the orthography follows predictable English patterns. 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 Medieval Latin duodēnum digitōrum (“space of twelve digits”) in reference to its length, from duodēnī (“twelve each”) + digitōrum, genitive plural of digitus (“finger; toe; digit”). 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 duodenum, spelled D-U-O-D-E-N-U-M, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.