Design is the creation of a plan or convention for the construction of an object or a system (as in architectural blueprints, engineering drawings,business processes, circuit diagrams and sewing patterns). Design has different connotations in different fields (see design disciplines below). In some cases the direct construction of an object (as in pottery, engineering, management, cowboy coding and graphic design) is also considered to be design.
More formally design has been defined as follows.(noun) a specification of an object, manifested by an agent, intended to accomplish goals, in a particular environment, using a set of primitive components, satisfying a set of requirements, subject to constraints;(verb, transitive) to create a design, in an environment (where the designer operates)
Another definition for design is a roadmap or a strategic approach for someone to achieve a unique expectation. It defines the specifications, plans, parameters, costs, activities, processes and how and what to do within legal, political, social, environmental, safety and economic constraints in achieving that objective.
Here, a "specification" can be manifested as either a plan or a finished product, and "primitives" are the elements from which the design object is composed.