vitruvian

from The Century Dictionary.

• Of or pertaining to Marcus Vitruvius Pollio, a Roman architect of the latter part of the first century b. c., the author of an important treatise on architecture, which, although its statements can be accepted only after careful criticism, preserves much that is valuable regarding Greek and Roman art.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Of or pertaining to Vitruvius, an ancient Roman architect.
• adjective (Arch.) a name given to a peculiar pattern of scrollwork, consisting of convolved undulations. It is used in classical architecture.