r Syllabification: (r)Translate r | into French | into German | into Italian | into Spanish Definition of r abbreviation recto. (giving position or direction) right:l to r: Evan, Nick, and David Law rule:under r 7.4 (6) the court may hear an application immediately symbol radius:2πr Statistics correlation coefficient:sigmoidoscopic and symptom scores also showed a significant correlation with each other (r = 0.91)r in other Oxford dictionaries Definition of r in the British & World English dictionary