(physics, chemistry, medicine) A radioactive isotope which, when injected into a chemically similar substance, or artificially attached to a biological or physical system, can be traced by radiation detection devices.

Capable of being traced; possible to track down.

use-wear analysis

A program or algorithm for ray tracing.

The quality of being traceless.

Without leaving a trace.

plural of tracelet

(computing theory) A short fragment of the trace of execution of a computer program, used in automated systems that attempt to understand and optimize source code.

The ability to trace (identify and measure) all the stages that led to a particular point in a process that consists of a chain of interrelated events

A private investigator or private detective who specializes in finding people who have attempted to disappear.