Tracing
/ˈtɹeɪsɪŋ/
verb
To follow the trail of.
To follow the history of.
To draw or sketch lightly or with care.
“He carefully traced the outlines of the old building before him.”
noun
The reproduction of an image made by copying it through translucent paper.
A record in the form of a graph made by a device such as a seismograph.
The process of finding something that is lost by studying evidence.