definition
/ˌdefɪˈnɪʃn; ˌdɛfə`nɪʃən/ n
1
(a) [U] stating the exact meaning (of words, etc) （词语等的）释义
Dictionary writers must be skilled in the art of definition. 词书编纂者必须精於给词语下定义的技巧.
(b) [C] statement that gives the exact meaning (of words, etc) （词语等的）定义
Definitions should not be more difficult to understand than the words they define. 词语的定义不应比所解释的词语更难理解.
2 [U]
(a) clearness of outline; making or being distinct in outline （轮廓的）清晰（度）; 鲜明（度）
The photograph has poor definition. 这张照片轮廓很不清楚.
They concentrated on better definition of the optical image. 他们致力於提高该光学影像的鲜明度.
(b) power of a lens (in a camera or telescope) to show clear outlines （照相机或望远镜中）透镜的分解力, 解像力.
3
(a) [U] clear statement; outlining 清楚的说明; 划出的轮廓
My duties require clearer definition. 我的职责需要更清楚的说明.
(b) [C] instance of this; outline 清楚的说明; 轮廓
The book attempts a definition of his role in world politics. 该书要阐明的是他在世界政局中的作用.