Definition of catalyse verb from the Oxford Advanced Learner's Dictionary

 

catalyse

 verb
(British English)(North American English catalyze)verb
BrE BrE//ˈkætəlaɪz//
 
; NAmE NAmE//ˈkætəlaɪz//
 
Verb Forms present simple I / you / we / they catalyse
BrE BrE//ˈkætəlaɪz//
 
; NAmE NAmE//ˈkætəlaɪz//
 
he / she / it catalyses
BrE BrE//ˈkætəlaɪzɪz//
 
; NAmE NAmE//ˈkætəlaɪzɪz//
 
past simple catalysed
BrE BrE//ˈkætəlaɪzd//
 
; NAmE NAmE//ˈkætəlaɪzd//
 
past participle catalysed
BrE BrE//ˈkætəlaɪzd//
 
; NAmE NAmE//ˈkætəlaɪzd//
 
-ing form catalysing
BrE BrE//ˈkætəlaɪzɪŋ//
 
; NAmE NAmE//ˈkætəlaɪzɪŋ//
 
Molecules and matter
 
jump to other results
catalyse something (chemistry) to make a chemical reaction happen faster See related entries: Molecules and matter Word Origin late 19th cent.: from catalysis ‘the acceleration of a chemical reaction by a catalyst’, on the pattern of analyse.