plural of tracing paper

(epidemiology) The process of identification of persons ("contacts") who may have come into contact with a person carrying an infectious disease.

present participle of contact trace

plural of contact tracing

Alternative form of contact tracing.

present participle of contact-trace

(chemistry) A compound, element, or isotope used to track the progress or history of a natural process.

A surname from Old French, a spelling variant of Tracy. / A female given name transferred from the surname, of popular British usage, variant of Tracy. / A male given name.

A practitioner of parkour. / (by restriction) a male parkour artist

(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.