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.
In English grammar, a direct object is a noun, noun phrase, or pronoun that identifies what or who receives the action of a transitive verb in a clause or sentence. Typically (but not always), the subject of a clause performs an action, and the direct object is acted upon by the subject: Jake [subject] baked [transitive verb] a cake [direct object].