Submitted by György Chityil ... on Fri, 01/19/2018 - 22:28 Hierarchy: NounDescription: {{trigonometry}} The trigonometric function 1 − cos(''x''). Abbreviations: '''versin''', '''vers'''Ngram: versed sineNgram Text: versed sineSource: WiktionaryIssue: 0Wiktionary tag: trigonometryNgram Count: 2