composition or compo
1. Type of putty made of whiting, glue, linseed-oil, and resin, subjected for two hours to the action of steam, and forced under pressure into moulds forceiling ornaments, mouldings on boiserie, etc.
2. C18 plaster mixes (normally consisting of gypsum and size) used instead of stucco.
"composition or compo." A Dictionary of Architecture and Landscape Architecture. . Encyclopedia.com. (August 17, 2018). http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/composition-or-compo
"composition or compo." A Dictionary of Architecture and Landscape Architecture. . Retrieved August 17, 2018 from Encyclopedia.com: http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/composition-or-compo