tracing

Noun
  1. The act of drawing a plan or diagram or outline (synset 100940235)
  2. A drawing created by superimposing a semitransparent sheet of paper on the original image and copying on it the lines of the original image (synset 104470508)
  3. The discovery and description of the course of development of something (synset 100151752)
    "the tracing of genealogies"

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