verb🔗ShareTo multiply by four."Quadrupling four gives sixteen."mathnumberbusinesseconomyChat with AIVocabulary GamePractice Reading
verb🔗ShareTo increase by a factor of four."Our profits quadrupled when we made the improvements."numbermathbusinesseconomyChat with AIVocabulary GamePractice Reading
verb🔗ShareTo provide four parallel running lines on a given stretch of railway."To handle the increasing volume of commuter trains, the railway company quadrupled the tracks between the city center and the suburbs. "technologyutilityindustryvehicleChat with AIVocabulary GamePractice Reading
