Submitted by György Chityil ... on Fri, 01/19/2018 - 18:14 Hierarchy: AdjectiveDescription: {{context|of a speed|aviation}} equal to, or greater than, or capable of achieving, five times the speed of sound.Ngram: hypersonicNgram Text: hypersonicSource: WiktionaryIssue: 0Wiktionary tag: of a speedaviationNgram Count: 1
