Submitted by György Chityil ... on Sat, 01/20/2018 - 00:57 Hierarchy: NounDescription: {{physics}} The amplitude of a wave equal to half of that from peak to peakNgram: semiamplitudeNgram Text: semiamplitudeSource: WiktionaryIssue: 0Wiktionary tag: physicsNgram Count: 1