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# boom

noun (a boom, booms); verb (boom, booms, boomed, booming); interjection (boom!)

«boom» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

1. A deep, loud sound like thunder or a big drum: the boom of the cannon. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/boom/#m1)
2. (verb) To make a deep loud sound or to speak very loudly: his voice boomed. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/boom/#m2)
3. A sudden fast growth or increase: a baby boom, a business boom. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/boom/#m3)
4. (verb) To grow or do very well: business is booming. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/boom/#m4)
5. A long pole on a sailing boat that holds the bottom of a sail. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/boom/#m5)
6. A long pole holding a microphone or camera. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/boom/#m6)
7. (slang interjection) "Boom!" means "There, done!" or celebrates success. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/boom/#m7)

### In the lessons

In stories it is a sound word; in science it relates to the sonic boom of very fast planes. In history and geography a "boom" is a time of fast growth (a gold rush boom, a population boom). In maths graphs a boom shows as a steep rise. Phrases: a sonic boom, baby boom, boom town, boom and bust.

### Examples

- The thunder went boom over the hills. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/boom/#x1)
- The headteacher's voice boomed across the hall. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/boom/#x2)
- Sales of umbrellas boomed in the wet summer. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/boom/#x3)
- A sonic boom is made when a plane flies faster than sound. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/boom/#x4)
- Duck when the sailors swing the boom! [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/boom/#x5)
- (slang) I finished my homework — boom! [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/boom/#x6)
- The gold rush caused a boom in the town's population. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/boom/#x7)
- Then he heard a thump and a shuffle, and the booming went on. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/boom/#x8)

### Note

Regular verb: boomed, booming. "Booming" can mean very loud or very successful. The opposite of a boom in money is a slump or bust. In maths a boom means numbers rising quickly.

## On Mova

- [Trees and pragmatics of «boom» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/boom/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«boom» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/boom.html) on Mova free.