a projectile that can be observed when in flight by the burning of chemical substances in its base
b.
ammunition consisting of such projectiles
c.
(as modifier)
tracer fire
3. medicine
any radioactive isotope introduced into the body to study metabolic processes, absorption, etc, by following its progress through the body with a gamma camera or other detector
4.
an investigation to trace missing cargo, mail, etc
tracer in American English
(ˈtreɪsər)
noun
1.
a person or thing that traces
; specif.,
a.
a person whose work is tracing drawings, designs, etc. on transparent paper
b.
a person whose work is tracing lost or missing articles, persons, etc.
c.
an instrument for tracing designs on cloth, etc.
2. US
an inquiry sent out for a letter, package, etc. that is missing in transport
3.
ammunition that traces its own course in the air with a trail of smoke or fire, so as to facilitate adjustment of the aim
4.
a substance, usually a radioactive isotope, used to follow a chemical process ora complex sequence of biochemical reactions (as in an animal body), to locate diseased cells and tissues, to determine physical properties, etc.
5.
a thread of contrasting color woven into or stamped on wire insulation for identification and for aid in tracing a circuit
tracer in Chemical Engineering
(treɪsər)
Word forms: (regular plural) tracers
noun
(Chemical Engineering: Reactors and separators)
A tracer is a chemically inactive substance which is used to track the flow of feed through a reactor or separator.
Use of an inert tracer to quantify the treatment feed rate and concentration is a valuable addition to watertreatment programs.
An inert tracer was quickly mixed into the main stream of reagent fluid entering the reactor to trackthe flow.
A tracer is a chemically inactive substance which is used to track the flow of feed througha reactor or separator.
Examples of 'tracer' in a sentence
tracer
Flashing white light illuminated the silhouettes of the mountains and red and yellow tracer fire soared into the sky.
O'Connor, Joe DESPERADOES (2001)
But we can put a tracer on outgoing calls, since those are logged by Billing.