spec (spĕk) Informal
1. specs The specifications, as for a building to be constructed.
tr.v. spec'd, spec'ing, specs or specced (spĕkt) or spec·cing (spĕkĭng)
To write or supply specifications for.
1. Of or relating to specifications: a manufacturer's spec sheet.
2. Done, constructed, produced, or purchased as a speculation: a spec job; a spec house.
On a speculation basis; with no assurance of profit: houses built on spec; writes TV commercials on spec.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.