ípsilon

== Catalan == === Pronunciation === IPA(key): (Northern, Central) [ˈip.si.lun] IPA(key): (Balearic, Valencia, Northwestern) [ˈip.si.lon] === Noun === ípsilon f (plural ípsilons) upsilon; the Greek letter Υ (lowercase υ) == Portuguese == === Alternative forms === ipsílon, ípsilo, ipsilone, ipsilão psilone, pissilone (Northeast Brazil) ípsulon (nonstandard) === Etymology === Learned borrowing from Latin ypsilon (“upsilon”), from Ancient Greek ὖ ψιλόν (û psilón, “upsilon”) (modern Greek ύψιλον (ýpsilon)), from ὖ (û) + ψιλός (psilós). === Pronunciation === Hyphenation: íp‧si‧lon === Noun === ípsilon m (plural ípsilones or (Brazil) ípsilons) The name of the Latin script letter Y/y. Synonym: i grego upsilon (name of the Greek letter Υ, υ) === See also === (Latin-script letter names) letra; á, bê, cê, dê, é, efe, gê / guê, agá, i, jota, cá / capa, ele, eme, ene, ó, pê, quê, erre, esse, tê, u, vê, dáblio, xis, ípsilon, zê === Further reading === “ípsilon”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2026 == Spanish == === Pronunciation === IPA(key): /ˈibsilon/ [ˈiβ̞.si.lõn] Rhymes: -ibsilon Syllabification: íp‧si‧lon === Noun === ípsilon f (plural ípsilon) upsilon; the Greek letter Υ, υ === Further reading === “ípsilon”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025