certão

== Old Galician-Portuguese == === Etymology === Inherited from Latin *certānus. Compare Old Spanish certano and Old French certain. === Pronunciation === IPA(key): /t͡ser.ˈtã.u/ === Adjective === certão (plural certãos, feminine certãa, feminine plural certãas) certain === Further reading === Universo Cantigas - "certão" == Portuguese == === Noun === certão obsolete form of sertão