0 past simple and past participle of triple --
1 to increase three times in size or amount, or to make something do this: --
Rates of wearing helmets have typically doubled or tripled following such interventions.
From 1645 to 1649 that proportion more than tripled to grow to 34 per cent.
The waiting list for organs, which now contains the names of 82,000 people, has more than tripled in the last 10 years.
During the same period, the annual timber harvest doubled, the annual fish catch tripled, and the country discovered, and developed, huge reserves of natural gas.
In contrast, the number of children in these categories tripled in the control group, increasing from 7% (4 children) to 22% (12 children).
Application of fruit-set hormone doubled fruit yields and, when combined with the rain shelters, nearly tripled yields compared with the control or simple raised-bed treatments.
Six hours after dams were injected with a teratogenic dose, expression had more than tripled.
It becomes the theme, it becomes the figure, it multiplies itself (doubled, tripled).
