planarius

Latin

Etymology

Derived from plānus, ultimately from the Proto-Indo-European root *pleh₂- (“flat”).
By surface analysis, plān(us) (“flat, level”) +‎ -ārius (“-ary”, adjectival derivational suffix).

Pronunciation

• (Classical Latin) IPA^(key): [pɫaːˈnaː.ri.ʊs]
• (modern Italianate Ecclesiastical) IPA^(key): [plaˈnaː.ri.us]

Adjective

plānārius (feminine plānāria, neuter plānārium); first/second-declension adjective

1. (Late Latin) of or pertaining to a plane; planar

Declension

First/second-declension adjective.

	singular				plural
	masculine	feminine	neuter		masculine	feminine	neuter
nominative	plānārius	plānāria	plānārium		plānāriī	plānāriae	plānāria
genitive	plānāriī	plānāriae	plānāriī		plānāriōrum	plānāriārum	plānāriōrum
dative	plānāriō	plānāriae	plānāriō		plānāriīs
accusative	plānārium	plānāriam	plānārium		plānāriōs	plānāriās	plānāria
ablative	plānāriō	plānāriā	plānāriō		plānāriīs
vocative	plānārie	plānāria	plānārium		plānāriī	plānāriae	plānāria

Descendants

• Galician: chairo, chaira
  • → Spanish: chaira
• Old Galician-Portuguese: chaneira
  • Portuguese: Cheira; chãiro, chairo, chaira (Trás-os-Montes)
• → English: planar

• Italian: planare

• → Portuguese: plãiro (semi-learned)
• → Spanish: planar

References

• “planarius”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press
• "planarius", in Charles du Fresne du Cange, Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• “planarius”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette.