切面 Traditional form: 切面 Pinyin (reading): qiēmiàn Definitions: section cross-cut tangent plane (math.) Characters: 切 - to cut, to mince, to slice, to carve; close to; eager 面 - face; surface, side; plane, dimension Traditional characters: 切 - to cut, to mince, to slice, to carve; close to; eager 面 - face; surface, side; plane, dimension