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.
Literature is a form of human expression. But not everything expressed in wordsâeven when organized and written downâis counted as literature. Those writings that are primarily informativeâtechnical, scholarly, journalisticâwould be excluded from the rank of literature by most, though not all, critics.