noun, verb, traced, trac⋅ing.| 1. | a surviving mark, sign, or evidence of the former existence, influence, or action of some agent or event; vestige: traces of an advanced civilization among the ruins. |
| 2. | a barely discernible indication or evidence of some quantity, quality, characteristic, expression, etc.: a trace of anger in his tone. |
| 3. | an extremely small amount of some chemical component: a trace of copper in its composition. |
| 4. | traces, the series of footprints left by an animal. |
| 5. | the track left by the passage of a person, animal, or object: the trace of her skates on the ice. |
| 6. | Meteorology. precipitation of less than 0.005 in. (0.127 mm). |
| 7. | a trail or path, esp. through wild or open territory, made by the passage of people, animals, or vehicles. |
| 8. | engram. |
| 9. | a tracing, drawing, or sketch of something. |
| 10. | a lightly drawn line, as the record drawn by a self-registering instrument. |
| 11. | Mathematics.
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| 12. | the visible line or lines produced on the screen of a cathode-ray tube by the deflection of the electron beam. |
| 13. | Linguistics. (in generative grammar) a construct that is phonologically empty but serves to mark the place in the surface structure of a sentence from which a noun phrase has been moved by a transformational operation. |
| 14. | Obsolete. a footprint. |
| 15. | to follow the footprints, track, or traces of. |
| 16. | to follow, make out, or determine the course or line of, esp. by going backward from the latest evidence, nearest existence, etc.: to trace one's ancestry to the Pilgrims. |
| 17. | to follow (footprints, evidence, the history or course of something, etc.). |
| 18. | to follow the course, development, or history of: to trace a political movement. |
| 19. | to ascertain by investigation; find out; discover: The police were unable to trace his whereabouts. |
| 20. | to draw (a line, outline, figure, etc.). |
| 21. | to make a plan, diagram, or map of. |
| 22. | to copy (a drawing, plan, etc.) by following the lines of the original on a superimposed transparent sheet. |
| 23. | to mark or ornament with lines, figures, etc. |
| 24. | to make an impression or imprinting of (a design, pattern, etc.). |
| 25. | (of a self-registering instrument) to print in a curved, broken, or wavy-lined manner. |
| 26. | to put down in writing. |
| 27. | to go back in history, ancestry, or origin; date back in time: Her family traces back to Paul Revere. |
| 28. | to follow a course, trail, etc.; make one's way. |
| 29. | (of a self-registering instrument) to print a record in a curved, broken, or wavy-lined manner. |

,| 1. | either of the two straps, ropes, or chains by which a carriage, wagon, or the like is drawn by a harnessed horse or other draft animal. |
| 2. | a piece in a machine, as a bar, transferring the movement of one part to another part, being hinged to each. |
| 3. | kick over the traces, to throw off restraint; become independent or defiant: He kicked over the traces and ran off to join the navy. |

engram en·gram (ěn'grām')
n.
A physical alteration thought to occur in living neural tissue in response to stimuli, posited as an explanation for memory. Also called neurogram.