specification

noun | \ ˌspe-sə-fə-ˈkā-shən \ | spec·i·fi·ca·tion

1. a : a written statement containing a description of particulars (as of charges or contract terms)

   b : a written description of an invention or discovery for which a patent is sought that embodies the manner and process of making and using the invention or discovery and concludes with a claim of that aspect for which the applicant demands credit

   c : a written description of construction work to be done forming part of the contract —usually used in pl.