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

 

zero

 verb
verb
BrE BrE//ˈzɪərəʊ//
 
; NAmE NAmE//ˈzɪroʊ//
 
, NAmE//ˈziːroʊ//
 
Verb Forms present simple I / you / we / they zero
BrE BrE//ˈzɪərəʊ//
 
; NAmE NAmE//ˈzɪroʊ//
 
, NAmE//ˈziːroʊ//
 
he / she / it zeroes
BrE BrE//ˈzɪərəʊz//
 
; NAmE NAmE//ˈzɪroʊz//
 
, NAmE//ˈziːroʊz//
 
past simple zeroed
BrE BrE//ˈzɪərəʊd//
 
; NAmE NAmE//ˈzɪroʊd//
 
, NAmE//ˈziːroʊd//
 
past participle zeroed
BrE BrE//ˈzɪərəʊd//
 
; NAmE NAmE//ˈzɪroʊd//
 
, NAmE//ˈziːroʊd//
 
-ing form zeroing
BrE BrE//ˈzɪərəʊɪŋ//
 
; NAmE NAmE//ˈzɪroʊɪŋ//
 
, NAmE//ˈziːroʊɪŋ//
 
 
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(zeroes, zeroing, zeroed, zeroed) zero something to turn an instrument, control, etc. to zero Word Origin early 17th cent.: from French zéro or Italian zero, via Old Spanish from Arabic ṣifr ‘cipher’. Phrasal Verbszero in on somebody
See the Oxford Advanced American Dictionary entry: zero