Definition of malfunction verb from the Oxford Advanced American Dictionary

 

malfunction

 verb
verb
NAmE//ˌmælˈfʌŋkʃn//
 
[intransitive]Verb Forms present simple I / you / we / they malfunction
 
he / she / it malfunctions
 
past simple malfunctioned
 
-ing form malfunctioning
 
 
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(of a machine, etc.) to fail to work correctly He was killed when his parachute malfunctioned. malfunctioning body cells
malfunctionnoun[countable, uncountable]
 
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The drug caused a malfunction in the brain.