Definition of: specification

(spes′ə·fə·kā′shən) noun
1. The act of specifying.
2. A definite and complete statement, as in a contract; also, one detail in such a statement.
3. In patent law, the detailed statement of an inventor's scheme, setting forth the nature of the invention and the precise method of constructing and applying it.
4. A specific description of certain dimensions, types of material, etc., to be used in a construction or engineering project; also, any item in this description.