boom
n. countablen. a period of time when a business or an economy grows very quickly and makes a lot of money. It can also mean a loud, deep sound like an explosion.
n. a period of rapid economic growth or sudden prosperity; alternatively, a deep, resonant sound. Both senses are common, though the economic sense is dominant in business contexts.
The city is enjoying a sudden housing boom.
Investors flocked to the region during the tech boom of the late nineties, hoping to find the next big startup.
While the economic boom brought unprecedented wealth to the urban centers, it also exacerbated the wealth gap between the rising middle class and the rural poor.
Onomatopoeic, perhaps borrowed; compare German bummen, Dutch bommen (“to hum, buzz”). The sense "a period of economic growth" is generally taken to derive from the sense "a rapid expansion", although other origins have also been suggested.
Borrowed from Dutch boom (“tree; pole”). Doublet of beam.
Often used with 'in' to specify the sector, such as 'a boom in tourism' or 'a boom in sales'.