ˌfizēˈänə.ˌtrās noun
( -s )
Etymology: French, from physiono- (from physionomie facial features, from Middle French phisonomie, physionomie facial features, physiognomy) + -trace (from tracer to trace, draw) — more at physiognomy , trace
: a device used in the late 18th and early 19th centuries to trace the profile of a sitter with chalk or white crayon on a red paper, the image being then completed in black or white crayon