The symmetry that a figure has if it can be made to fit exactly onto the original when it is translated a given distance at a given direction and then reflected over a line. As in translational symmetry, glide-reflectional symmetry exists only for infinite patterns.
literature noun [U] (WRITING). B1 written âartistic âworks, âespecially those with a high and âlasting âartistic âvalue: âclassical/âmodern literature Wuthering Heights is a âclassic of âEnglish literature. More examples. 1  He's very â knowledgeable about â German literature.
In the broadest sense, literature includes any type of writings on any subject: the literature of medicine; usually, however, it means the body of artistic writings of a country or period that are characterized by beauty of expression and form and by universality of intellectual and emotional appeal: English literature of the 16th century.