- a structure of concepts, values, customs, views, etc., by means of which an individual or group perceives or evaluates data, communicates ideas, and regulates behavior.
- a framework that is used for the observation and mathematical description of physical phenomena and the formulation of physical laws, usually consisting of an observer, a coordinate system, and a clock or clocks assigning times at positions with respect to the coordinate system.
- a set of basic assumptions or standards that determines and sanctions behaviour
- any set of planes or curves, such as the three coordinate axes, used to locate or measure movement of a point in space
