Definition of threefold in English:



  • 1Three times as great or as numerous.

    ‘a threefold increase in the number of stolen cars’
    • ‘The years between 1990 and 2000 saw a threefold increase in the number of herders in Mongolia.’
    • ‘The sexual selection process, along with the survival benefits of intelligence, has resulted in a threefold increase in human brain volume in just 2.5 million years, say the scientists.’
    • ‘Given that the rate of multiple births has risen by 1000 in the past decade, with a threefold increase in triplets alone, any woman contemplating pregnancy may appreciate the existence of their national support network.’
    • ‘If there is a problem, what has driven a threefold increase in costs in just three years?’
    • ‘With a massive expansion in Tramore's population and with a threefold increase in water activity in recent years, demands on the rescue service are becoming more frequent.’
    • ‘During 2002 there was a threefold increase in the number of airlines whose planes consistently stayed on ‘noise preferred routes’ during take-off.’
    • ‘It comes rather late in the day, considering the UK's airport capacity has barely expanded since the Second World War, despite a threefold increase in passenger numbers since 1980.’
    • ‘There will be a threefold increase in the number of cases booked from now till the year end, if we look at the number of cases booked till now.’
    • ‘He pointed out that in the last seven years there has been a threefold increase in the number of people caught for drink driving.’
    • ‘Lyell's visits to France and Italy led him to propose a threefold stratigraphical division of the Tertiary rocks there on the basis of the proportion of recent to extinct species of mollusc present.’
    • ‘Transgenic animals had more than threefold the activity levels of those observed in wild-type littermates, as in the 7-day exposed newborns.’
    • ‘Most diabetes suffers are waiting 17 months to see a specialist and there has been a threefold increase in the number of patients referred to Beaumont Hospital, Dublin in the past seven years.’
    • ‘There's been a threefold increase in the number of overseas students since Melbourne University's study of first year students began about 10 years ago.’
    • ‘The total costs, including the financial costs, would be 846 million, a threefold increase in current terms on the price published in 1960, or the equivalent of two-thirds of the British motorway programme for 1973.’
    • ‘We found that residing in a high-risk neighborhood translated into nearly a threefold increase in the rate of psychological difficulties and over double the incidence of academic or behavioral problems at school.’
    • ‘This February the visitor tally is nigh seven thousand, a more than threefold increase of which I'm mighty proud.’
    • ‘Students at the college are furious that they face a threefold increase in their course fee.’
    • ‘From an estimated total of 181,000 in 1975, there was a threefold increase within five years according to published figures, to over 600,000 by 1980.’
    • ‘Emergency surgery is associated with a threefold increase in morbidity and mortality.’
    • ‘This shows an almost threefold increase in a certain childhood leukaemia.’
    three-way, tripartite
    View synonyms
    1. 1.1Having three parts or elements.
      ‘the differences are threefold’
      • ‘Firstly, there is a threefold apostolic testimony.’
      • ‘It is in relation to the threefold parental authorities that we can best understand Min's metamorphosis from a child-adult to a confused adolescent and then, unfortunately, to an unthinking adult-child.’
      • ‘This is the traditional, threefold mystical way of purgation, illumination and union.’
      • ‘At the beginning of each mission, there's a narrative that outlines the background to the impending scenario, in addition to the objectives that must be resolved, the latter of which may be twofold or threefold in nature.’


  • By three times; to three times the number or amount.

    ‘the aftershocks intensify threefold each time’
    • ‘Attendance numbers at the Portrait Gallery increased threefold during his eight-year tenure, reaching just under 1,500,000 in 2001.’
    • ‘While I'm on the point, my book consumption has increased threefold.’
    • ‘The junk email I am getting has increased threefold over the last week or so.’
    • ‘So even if we do go up threefold this year, we're only talking about 18,000 people.’
    • ‘The nation has reduced alcohol consumption threefold in this century.’
    • ‘Taxes were low from 1600 to 1630, when the French peasant economy prospered, and then increased threefold in real terms under Richelieu and Mazarin from 1630 to 1660, when northern France was gripped by agrarian crises.’
    • ‘In some areas of the world, rates of obesity have risen threefold or more since 1980.’
    • ‘Turnover during the same period rose threefold, from £20.3 million in 1999 to £60.8 million for the nine months to December 2000.’
    • ‘Over the course of the twentieth century human population has increased more than threefold and gross world product perhaps twentyfold.’
    • ‘Fatalities from ovarian cancer have increased threefold in the past 40 years.’
    • ‘Still, these figures do not include unreported deaths and ‘suicide equivalents’, which could easily increase these statistics threefold.’
    • ‘Philip built up the army numbers: in the course of his reign the number of infantry available to him was increased threefold from 10,000 to 30,000, the number of cavalry more than sixfold, from 600 to 4,000.’
    • ‘Their use of visual data surpasses newspapers threefold.’
    • ‘In recent years, statistics suggest, hospital discharge rates have increased threefold and mortality has increased nearly 30 per cent.’
    • ‘Although saline-filled implants have been the sole choice for women seeking cosmetic augmentation since 1992, the number of implant surgeries has reportedly increased threefold since then.’
    • ‘There are plans to increase investment in green energy threefold.’
    • ‘The number of Caesarean sections has increased threefold in Britain over the last 25 years with one in five babies now born by the method, according to Department of Health figures.’
    • ‘This growth is mirrored in the company's workforce, with staff numbers increasing almost threefold in recent years, from 90 employees in 2003 to over 300 at present.’
    • ‘In 1999 we treated the western end of Fairburn Ings with barley straw and numbers of wildfowl have increased threefold since that time.’
    • ‘The value of shares traded between investors, the so-called secondary market, rose threefold last year, to $2.5 billion.’