Define Architectural Design.
1st source: http://www.businessdictionary.com/definition/architectural-design.html
Definition: Concept that focuses on the components or elements of a structure or system that unifies them into a coherent and functional whole, according to a particular approach in achieving the objectives under the given constraints or limitations.
2nd source: http://www.wisegeek.com/what-is-architecture-design.htm
Definition: Architecture design refers to the actual design and layout of spaces
3rd source: http://dictionary.reference.com/browse/architecture
Definition: The art and science of designing the erection of buildings and similar structures