Definition of rectification in US English:

rectification

noun

  • 1The action of putting something right; correction.

    ‘rectification of common errors in letter writing’
    ‘demands for rectification of terrible injustices’
    count noun ‘rectifications are sent to the client for feedback’
  • 2The conversion of an alternating current to direct current.

    ‘the inward rectification of single-channel currents’

Pronunciation

rectification

/ˌrɛktəfəˈkeɪʃ(ə)n//ˌrektəfəˈkāSH(ə)n/