sinopia
noun
si·no·pia sə-ˈnō-pē-ə 
plural sinopias or sinopie sə-ˈnō-pē-ˌā
1
: a red to reddish-brown earth pigment used by the ancients that depends for its color on its content of red ferric oxide
2
: a preliminary drawing for a fresco done in sinopia
Word History
Etymology
Italian, from Latin sinopis, from Greek sinōpis, from Sinōpē Sinop, ancient seaport in Asia Minor
First Known Use
1844, in the meaning defined at sense 1