0 past simple and past participle of triple
1 to increase three times in size or amount, or to make something do this:
In the same period out-patient care grew 33 % and the volume of other types of community care more than tripled.
Furthermore, massive immigration tripled the population, which became two and a half times richer.
In the past two decades our circulation has more than tripled, from 52,578 in 1964 to 160,000 today.
By the third year, the number of farmers using the new methods had more than tripled.
Numbers more than doubled between 1931 and 1937; they had nearly tripled by 1940.
In the fiscal year 1908-9 its income almost tripled, from £7,546 to £21,214.
Yet overall agricultural yields have only about tripled.
It becomes the theme, it becomes the figure, it multiplies itself (doubled, tripled).
