Nowoczesny słownik angielsko-polski 
                        wskaźnik
Słownik medyczny angielsko-polski Iwona Kienzler
                        objaw wiodący
Wordnet angielsko-polski 
                        
1. (a number or ratio (a value on a scale of measurement) derived from a series of observed facts
can reveal relative changes as a function of time) 
indeks 
synonim: index
synonim: index number
synonim: indicator
2. (a number or ratio (a value on a scale of measurement) derived from a series of observed facts
can reveal relative changes as a function of time) 
wyznacznik: : synonim: index
synonim: index number
synonim: indicator
3. (something that serves to indicate or suggest
 "an indication of foul play"
 "indications of strain"
 "symptoms are the prime indicants of disease") 
oznaka, objaw, symptom, przejaw, znak, wskazówka, uzewnętrznienie: : synonim: indication