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 (Late Latin) of or pertaining to a plane; planar ==== Declension ==== First/second-declension adjective. ==== 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.