euthia

== Latin == === Etymology === From Ancient Greek εὐθεῖα (eutheîa) === Pronunciation === (Classical Latin) IPA(key): [ˈɛu̯.tʰi.a] (modern Italianate Ecclesiastical) IPA(key): [ˈɛːu̯.ti.a] === Noun === euthīa f (genitive euthīae); first declension (geometry) straight line. ==== Declension ==== First-declension noun.