trace

A visible mark, such as a footprint, made or left by the passage of a person, animal, or thing.

Evidence or an indication of the former presence or existence of something; a vestige.

An extremely small amount or barely perceivable indication.

A constituent, such as a chemical compound or element, present in quantities less than a standard limit.

A path or trail that has been beaten out by the passage of animals or people.

An act of researching or ascertaining the origin or location of something.

A line drawn by a recording instrument, such as a cardiograph.