specification

The act of specifying.

A detailed, exact statement of particulars, especially a statement prescribing materials, dimensions, and quality of work for something to be built, installed, or manufactured.

A single item or article that has been specified.

An exact written description of an invention by an applicant for a patent.

An act of specifying, or making a detailed statement, or the statement so made; a definite or formal mention of particulars.