0 past simple and past participle of treble
1 to increase three times in size or amount, or to make something do this:
Between 1890 and 1912, net local government expenditure met from rates and exchequer grants more than trebled.
The literacy rate has more than trebled from 18 per cent to 65 percent of the population.
The number of hospitals and clinics trebled between 1975 and 1998, while the number of licensed doctors increased from 16,800 to 65,431.
If the span were trebled, to an unbelievable dimension of nearly 100m, with the member sizes increased in proportion, then the nominal stresses would be increased by only 75%.
He notes that while the upper classes trebled between 1500 and 1700, at a time when the total population barely doubled, the numbers of the lowest ranks in society increased.
This means that within a year the community programme has been more than trebled in size.
I calculate that the trebled programme will probably need an expenditure of about £700 million to £720 million in the next nine years.
Now that programme is to be virtually trebled.
