D defs.my
Entry 1 sense Webster, 1913

Marmoratum opus

· Mar·mo·ra·tum o·pus · IPA
01 A kind of hard finish for plasterwork, made of plaster of Paris and marble dust, and capable of taking a high polish.
  1. 1.
    A kind of hard finish for plasterwork, made of plaster of Paris and marble dust, and capable of taking a high polish.(Arch.)