Search Result for "sensitiser": 
Wordnet 3.0

NOUN (1)

1. (chemistry) a substance other than a catalyst that facilitates the start of a catalytic reaction;
[syn: sensitizer, sensitiser]



WordNet (r) 3.0 (2006):

sensitiser
    n 1: (chemistry) a substance other than a catalyst that
         facilitates the start of a catalytic reaction [syn:
         sensitizer, sensitiser]