Submitted by György Chityil ... on Fri, 01/19/2018 - 23:58 Hierarchy: NounDescription: {{context|law}} The displacement of a lower jurisdiction's laws when they conflict with those of a higher jurisdiction.Ngram: preemptionNgram Text: preemptionSource: WiktionaryIssue: 0Wiktionary tag: lawNgram Count: 1