specification
noun
uk/ˌspesɪfɪˈkeɪʃən/ us [ C, usually plural ] (also informal spec)
a detailed description of how something should be done, made, etc.:
meet/conform to specifications The health accounts would have to be used in conjunction with insurance policies that meet specifications set by law.
specifications for sth We have set rigid specifications for customer service.
product/performance/design specifications
We all need to be working from the same set of specifications.
Those specs cover everything from default settings for screen resolutions to more standard ways to work with modems.
to specification(s) (also informal to spec(s))
if a product is made to specification, it is made exactly as the person who designed it said it should be made:
If the project is completed on time to specification the contractor will realize a reasonable profit.
make/build sth to (sb's) specification(s) All products are made exactly to the customer's specifications.
[ U ]
the act of giving detailed information about how something should be done:
Management made no clear specification of the size of the sales territory that each salesperson was to cover.