Słownik polsko-angielski 
                        instr. indicator
~ promieniowania - radioactive indicator
~ promieniowania beta-gamma - beta-gamma indicator
Wordnet polsko-angielski 
                         ( (chemistry) a substance that changes color to indicate the presence of some ion or substance
can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction) 
indicator 
synonim: wskaźnik
Słownik polsko-angielski EXETER Copyright © http://www.kastor.strefa.pl.
                        indicator
Słownik medyczny polsko-angielski Iwona Kienzler
                        indicator n