Submitted by György Chityil ... on Fri, 01/19/2018 - 16:45 Hierarchy: ConjunctionDescription: {{logic}} Is equivalent to; implies and is implied by; is true and false in the same cases as.Ngram: if and only ifNgram Text: if and only ifSource: WiktionaryIssue: 0Wiktionary tag: logicNgram Count: 4