Submitted by György Chityil ... on Sat, 01/20/2018 - 01:01 Hierarchy: NounDescription: {{physics}} A difference of a quarter of a wavelength between the spatial positions of two corresponding points in a waveNgram: space quadratureNgram Text: space quadratureSource: WiktionaryIssue: 0Wiktionary tag: physicsNgram Count: 2