the transporting of students by bus to schools outside their neighborhoods, especially as a means of achieving socioeconomic or racial diversity among students in a public school. Origin Expand 1885-90; bus 1 (v.) + -ing 1, spelled irregular with single s, perhaps to avoid association with buss
Translational symmetry of an object means that a particular translation does not change the object. For a given object, the translations for which this applies form a group, the symmetry group of the object, or, if the object has more kinds of symmetry, a subgroup of the symmetry group. 1 Geometry.
The object: An object is usually defined as an instance of a class. In simple terms, it is an analogue to a pastry out of a mold. As long as the same mold is used, one can create a pastry of the same shape (this shows a class can be instantiated multiple times and each of them is like a copy out of that template).