Submitted by György Chityil ... on Fri, 01/19/2018 - 18:23 Hierarchy: InitialismDescription: {{aeronautics}} '''M'''aintenance, '''R'''epair and '''O'''verhaulNgram: MRONgram Text: MROSource: WiktionaryIssue: 0Wiktionary tag: aeronauticsNgram Count: 1Wikokit WikiText ID: 108042