specification
n. C / Un. a detailed description of how something should be made or done. It lists all the exact requirements, like size, materials, or technical parts.
n. a detailed document or statement describing the exact requirements, materials, and dimensions for a piece of work or a product.
The architect sent the final specification for the new house.
The engineering team had to update the technical specification to include the new safety standards required by the government.
Before the manufacturing process begins, every component must be checked against the original specification to ensure total compliance with the client's rigorous quality standards.
From Middle French specification, from Medieval Latin specificationem (accusative of specificatio).
Often used in the plural ('specifications' or 'specs') when referring to a full set of requirements.