planum

From Latin plānum (“level ground, plain”).

planum (plural plana)

1. (anatomy) any flat surface
2. (astronomy) a plain or plateau on a moon or planet

• planum temporale

From plānus (“flat, even, level”).

• (Classical) IPA^(key): /ˈplaː.num/

plānum n (genitive plānī); second declension

1. a plain, level ground

Second declension.

• plānē
• plānus

• Dutch: plein
• English: plain, plane
• Galician: chan, plano
• Old Portuguese: chão
• Portuguese: chão, plano
• Spanish: llano, plano

• Sijs, Nicoline van der (editor) (2010), Etymologiebank
• planum in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• planum in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
• planum in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français, Hachette
• Carl Meissner; Henry William Auden (1894) Latin Phrase-Book‎, London: Macmillan and Co.
  • to demonstrate, make a thing clear: aliquid planum facere (Ad Herenn. 2. 5)