0 present participle of treble
1 to increase three times in size or amount, or to make something do this:
This trebling of the pregnancy rate is highly significant and difficult to interpret.
Feinstein calculates a trebling of the investment proportion between 1945 and 1947.
Trebling would mean 6,000 megawatts of atomic electricity by 1965 with a coal equivalent of about 18 million tons a year.
The company reports show that each year directors' fees are doubling and trebling.
The prospect of his beer trebling in price—instant inflation, as it were—is truly daunting.
Doubling, trebling or quadrupling the fines will not solve the problem but it will impose a tax that, ultimately, passengers will have to pay.
It involves doubling the annual expenditure in ten years and trebling it in twenty.
We are not certain whether, instead of doubling, it is not trebling the duty.
