ra·di·o·trac·er 
(rādē-ō-trā′sər)
(rādē-ō-trā′sər)n.
A radioactive tracer.
- carbon-14 dating
- carbonaceous
- carbonado
- carbonado
- carbonara
- carbonate
- carbonated water
- carbonation
- carbonator
- carbon black
- carbon copy
- carbon cycle
- carbon-date
- carbon dating
- carbon dioxide
- carbon disulfide
- carbon fiber
- carbon footprint
- carbonic acid
- carbonic acid gas
- Carboniferous
- carbonium ion
- carbonization
- carbonize
- carbonizer