prone /prəun/ adj. 1. (和to连用)易于…的，很可能…的：He’s very prone to colds in winter. 他在冬天易患感冒。She’s prone to exaggerate. 她动不动就夸张。2.俯卧的：He was lying prone on the couch, fast asleep. 他俯卧在长沙发椅上，睡得很熟。