Submitted by György Chityil ... on Sat, 01/20/2018 - 00:48 Hierarchy: NounDescription: {{physics|biology}} The study of the effect of ionizing and nonionizing radiation on biological systems.Ngram: radiation biologyNgram Text: radiation biologySource: WiktionaryIssue: 0Wiktionary tag: physicsbiologyNgram Count: 2