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εὐθεῖα. In DICTIOUS you will not only get to know all the dictionary meanings for the word
εὐθεῖα, but we will also tell you about its etymology, its characteristics and you will know how to say
εὐθεῖα in singular and plural. Everything you need to know about the word
εὐθεῖα you have here. The definition of the word
εὐθεῖα will help you to be more precise and correct when speaking or writing your texts. Knowing the definition of
εὐθεῖα, as well as those of other words, enriches your vocabulary and provides you with more and better linguistic resources.
Ancient Greek
Pronunciation
- IPA(key): /eu̯.tʰêː.a/ → /eɸˈθi.a/ → /efˈθi.a/
Noun
εὐθεῖᾰ • (eutheîa) f (genitive εὐθείᾱς); first declension
- (grammar) Ellipsis of εὐθεῖα πτῶσις (eutheîa ptôsis, “nominative case”, literally “straight case”).
- (geometry) Ellipsis of εὐθεῖα γραμμή (eutheîa grammḗ, “straight line”).
350 BCE – 250 BCE,
Euclid,
Elements 1:
- διάμετρος δὲ τοῦ κύκλου ἐστὶν εὐθεῖά τις διὰ τοῦ κέντρου ἠγμένη καὶ περατουμένη ἐφ᾽ ἑκάτερα τὰ μέρη ὑπὸ τῆς τοῦ κύκλου περιφερείας, ἥτις καὶ δίχα τέμνει τὸν κύκλον.
- diámetros dè toû kúklou estìn eutheîá tis dià toû kéntrou ēgménē kaì peratouménē eph᾽ hekátera tà mérē hupò tês toû kúklou periphereías, hḗtis kaì díkha témnei tòn kúklon.
Declension
Descendants
Adjective
εὐθεῖᾰ • (eutheîa)
- feminine nominative/vocative singular of εὐθύς (euthús)
Further reading