出典:Wiktionary
From Latin rotālis (“wheeled, turning”), from rota (“wheel”) + -ālis (“-al”, forming adjectives). In reference to motion, under the influence of earlier rotary.
From Italian and Latin Rota (“an ecclesiastical appellate court in the Catholic Church”) + -al (“forming adjectives”), under the influence of Latin rotālis.
From Arabic رُطْل (ruṭl), variant of classical رِطْل (riṭl), ultimately from Ancient Greek λίτρα (lítra).
rotal (複数形 rotals)