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uno (Cardinal Number) "one"
10th cent. From Latin unus 'id.' Old Latin oino, accusative singular masculine of *oinos. From Proto-Italic *oino- 'id.' From late Proto-Indo-European *Hoi̯-no- 'id.' The first element *Hoi̯- is possibly from Proto-Indo-European *h1ei̯- "this/that."
Indo-European
Romance
Asturian unu, Portuguese um, Galician un, Catalan un, French un, Italian uno, Aromanian un, Romanian unu, Sardinian unu
Italic
Oscan uns "one," Umbrian uinus 'id.'
Celtic
Old Irish óen "one," Middle Welsh un 'id.,' Old Breton un 'id.,' Cornish un 'id.'
Germanic
Gothic ains "one," Old Norse einn "id.," Old High German ein 'id.,' Old Saxon ēn 'id.,' Old English ān 'id.' (English one)
Albanian
Albanian një "one"
Balto-Slavic
Serbian Chuch Slavic inъ "someone," Russian inój "other," Czech jiný 'id.,' Polish inny 'id.,' Slovene in 'id.,' Old Prussian ainan "one," Lithuanian víenas 'id.,' Latvian viêns 'id.'
Hellenic
Ancient Greek οἴνη (oíne) "one (on dice)"
Indo-Iranian
Sanskrit éka- "one," Avestan aēuua- 'id.'