πλοῖον

From the o-grade of the root of πλέω (pléō, “to sail”) +‎ -ιον (-ion), or inherited directly from Proto-Indo-European *plówyom (“floating vessel”): compare Proto-Germanic *flawją (“ship, vessel”).^[1]

πλοῖον • (ploîon) n (genitive πλοίου); second declension

1. a floating vessel, ship, boat
   • 460 BCE – 420 BCE, Herodotus, Histories 1.168
   • 467 BCE, Aeschylus, Seven Against Thebes 601
   • 458 BCE, Aeschylus, Agamemnon 625
   • 460 BCE – 420 BCE, Herodotus, Histories 7.36
   • 460 BCE – 395 BCE, Thucydides, History of the Peloponnesian War 2.83
   • 430 BCE – 354 BCE, Xenophon, Anabasis 7.1.20
   • 460 BCE – 420 BCE, Herodotus, Histories 6.48
   • 460 BCE – 420 BCE, Herodotus, Histories 5.30
   • 460 BCE – 395 BCE, Thucydides, History of the Peloponnesian War 1.14
   • 430 BCE – 354 BCE, Xenophon, Hellenica 5.1.21
   • 36 BCE – 30 BCE, Diodorus Siculus, Historical Library 13.78
   • 460 BCE – 395 BCE, Thucydides, History of the Peloponnesian War 4.116
   • 390 BCE, Plato, Hippias Major 295D
   • 330 BCE, Demosthenes, On the Crown 106

• Greek: πλοίο (ploío)

• “πλοῖον”, in Liddell & Scott (1940) A Greek–English Lexicon, Oxford: Clarendon Press
• “πλοῖον”, in Liddell & Scott (1889) An Intermediate Greek–English Lexicon, New York: Harper & Brothers
• G4143 in Strong, James (1979) Strong’s Exhaustive Concordance to the Bible
• πλοῖον in Trapp, Erich, et al. (1994–2007) Lexikon zur byzantinischen Gräzität besonders des 9.-12. Jahrhunderts [the Lexicon of Byzantine Hellenism, Particularly the 9th–12th Centuries], Verlag der Österreichischen Akademie der Wissenschaften
• Woodhouse, S. C. (1910) English–Greek Dictionary: A Vocabulary of the Attic Language‎, London: Routledge & Kegan Paul Limited.
  • bark idem, page 63.
  • boat idem, page 87.
  • coracle idem, page 174.
  • ship idem, page 766.
  • skiff idem, page 780.
  • smack idem, page 786.
  • tonnage idem, page 880.
  • vessel idem, page 949.