Submitted by György Chityil ... on Fri, 01/19/2018 - 20:21 Hierarchy: AdjectiveDescription: {{context|of a speed}} less than the speed of sound (in the same medium, and at the same temperature and pressure)Ngram: subsonicNgram Text: subsonicSource: WiktionaryIssue: 0Wiktionary tag: of a speedNgram Count: 1
