|Origin:||From the sound|
1 [intransitive usually in progressive]
if business, trade, or a particular area is booming, it is increasing and being very successful:
Business was booming, and money wasn't a problem.
Tourism on the island has boomed.
2C also boom (something ↔) out [transitive]
to say something in a loud deep voice:
'Ladies and gentlemen,' his voice boomed out.
3C also boom out [intransitive]
to make a loud deep sound:
Guns boomed in the distance.
—booming adjective:WORD FOCUS: loud
a booming economy
similar words: noisy, booming, raucous, rowdy
extremely loud: deafening, earsplitting, thunderous
➔ See also loud