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

 

trial

 verb
verb
BrE BrE//ˈtraɪəl//
 
; NAmE NAmE//ˈtraɪəl//
 
Verb Forms present simple I / you / we / they trial
BrE BrE//ˈtraɪəl//
 
; NAmE NAmE//ˈtraɪəl//
 
he / she / it trials
BrE BrE//ˈtraɪəlz//
 
; NAmE NAmE//ˈtraɪəlz//
 
past simple trialled
BrE BrE//ˈtraɪəld//
 
; NAmE NAmE//ˈtraɪəld//
 
past participle trialled
BrE BrE//ˈtraɪəld//
 
; NAmE NAmE//ˈtraɪəld//
 
(North American English) past simple trialed
BrE BrE//ˈtraɪəld//
 
; NAmE NAmE//ˈtraɪəld//
 
(North American English) past participle trialed
BrE BrE//ˈtraɪəld//
 
; NAmE NAmE//ˈtraɪəld//
 
-ing form trialling
BrE BrE//ˈtraɪəlɪŋ//
 
; NAmE NAmE//ˈtraɪəlɪŋ//
 
(North American English) -ing form trialing
BrE BrE//ˈtraɪəlɪŋ//
 
; NAmE NAmE//ˈtraɪəlɪŋ//
 
 
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(trialling, trialled, (North American English)trialing, trialed) [transitive, intransitive] trial (something) (British English) to test the ability, quality or performance of something to see if it will be effective or successful Word Origin late Middle English (as a noun): from Anglo-Norman French, or from medieval Latin triallum. The verb dates from the 1980s.