διάμετρος

From δῐᾰ- (dĭă-, “through”) +‎ μέτρον (métron, “measure”).

δῐᾰ́μετρος • (dĭắmetros) f (genitive δῐᾰμέτρου); second declension

1. the diameter or diagonal of a parallelogram
   • 386 BCE – 367 BCE, Plato, Meno 85B
   • 360 BCE, Plato, Timaeus 54E
   • 384 BCE – 322 BCE, Aristotle, Nicomachean Ethics 5.5.8
   • 350 BCE, Aristotle, On the Heavens 1.8.11
   • 384 BCE – 322 BCE, Aristotle, Meteorology 2.6.5
   • 384 BCE – 322 BCE, Aristotle, Progression of Animals 1.5
   • 384 BCE – 322 BCE, Aristotle, Progression of Animals 14.4, (Compare Plutarch, Moralia 23A)
   • 125 CE – 200 CE, Lucian, The Downward Journey 14
   1. the diameter of a circle
      • 350 BCE, Aristotle, On the Heavens 1.4.3
      • 384 BCE – 322 BCE, Aristotle, Movement of Animals 3.4
2. a rule for drawing the diameter
   • 405 BCE, Aristophanes, The Frogs 801

• Danish: diameter
• Dutch: diameter
• English: diameter
• Spanish: diámetro
• Norwegian: diameter
• Russian: диаметр (diametr)
• Sanskrit: जामित्र (jāmitra)

• “διάμετρος”, in Liddell & Scott (1940) A Greek–English Lexicon, Oxford: Clarendon Press
• “διάμετρος”, in Liddell & Scott (1889) An Intermediate Greek–English Lexicon, New York: Harper & Brothers
• διάμετρος in Bailly, Anatole (1935) Le Grand Bailly: Dictionnaire grec-français, Paris: Hachette
• διάμετρος in the Diccionario Griego–Español en línea (2006–2025)
• Woodhouse, S. C. (1910) English–Greek Dictionary: A Vocabulary of the Attic Language‎^[1], London: Routledge & Kegan Paul Limited.
  • diagonal idem, page 221.
  • diameter idem, page 222.

διάμετρος • (diámetros) f (plural διάμετροι)

1. (geometry, engineering) diameter

• ακτίνα f (aktína, “radius”)
• περιφέρεια f (periféreia, “circumference”)