Tracer
Tracer may refer to: == Science == Flow tracer, any fluid property used to track fluid motion Fluorescent tracer, a substance such as 2-NBDG containing a fluorophore that is used for tracking purposes Histochemical tracer, a substance used for tracing purposes in histochemistry, the study of the composition of cells and tissues Isotopic tracer, a substance with an isotope that has been enriched to a greater level than that found in nature Radioactive tracer, a substance containing a radioisotope that is used for tracking purposes TRACER (cosmic ray detector) (Transition Radiation Array for Cosmic Energetic Radiation), a balloon-borne cosmic ray detector Tracers, a colloquialism for visual trailing, often experienced in connection with drug use TRACERS (Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites), a pair of orbiters to study the solar wind == Military == Tracers, tracer ammunition, special bullets that burn brightly to enable the shooter to follow the bullets' trajectories Tactical reconnaissance and counter-concealment-enabled radar (TRACER), a radar system developed by the United States Army Grumman E-1 Tracer, a carrier-borne early warning aircraft used by the United States Navy in the 1960s Tactical Reconnaissance Armoured Combat Equipment Requirement, a joint British–American scout vehicle == Arts and entertainment == === Music === Tracer (band), an Australian rock band Tracer (album), a 2012 album by Teengirl Fantasy "Tracers", song by Ash (band) from A-Z, Vol.1 2010 "Tracers", song by Miracle Fortress from Was I the Wave?