excrescence
/ɪkˈskresəns/noun
1- a distinct outgrowth on a human or animal body or on a plant, especially one that is the result of disease or abnormality（人或动、植物身上的）赘生物; 赘疣; （树）瘤。
1.1
- an unattractive or superfluous addition or feature多余物; 累赘：
removing the excrescences of later interpretation.
去掉后半部分说明中的多余的话。
词源
late Middle English: from Latin excrescentia, from excrescere 'grow out', from ex- 'out'+crescere 'grow'.