Definition of non-importation in US English:

non-importation

noun

  • Failure or refusal to import goods, especially (US History) in contravention of agreements or acts made by American colonial governments between 1768 and 1774 to prevent the import of goods from Britain.

Origin

Mid 18th century. From non- + importation. Compare French non-importation.

Pronunciation

non-importation

/ˌnɒnɪmpɔːˈteɪʃn/