Definitions of spent conviction
(UK) In the UK, the Rehabilitation of Offenders Act allows convictions to be "spent" after a certain period of time. For instance, for anyone sentenced to less than six months in prison, their conviction has become spent after two years.
Spent convictions typically do not need to be disclosed to employers.
a finding of guilt in a criminal case that is immediately treated as if it had already been spent, and so the convict will not be punished or have a criminal record
He was given a spent conviction, which means he won't have a criminal record for buying the stolen iPad.