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# bulb

noun (a bulb, bulbs)

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

## Everyday

1. A bulb (light bulb) is the glass part of a lamp that gives out light when electricity flows through it. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/bulb/#m1)
2. A bulb is the round underground part of some plants, like tulips, onions and daffodils, from which a new plant grows. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/bulb/#m2)
3. A bulb is any round, swollen part, like the bulb of a thermometer. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/bulb/#m3)

### In the lessons

In science, a bulb is a component in an electric circuit: it lights only when the circuit is complete; more batteries make it brighter, more bulbs in a line make each dimmer. In nature lessons, bulbs are planted in autumn and flower in spring; they store food for the plant. Phrases: light bulb, energy-saving bulb, LED bulb, a light-bulb moment (a sudden good idea), plant bulbs.

### Examples

- The bulb lit up when we closed the switch. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/bulb/#x1)
- Dad changed the bulb in the kitchen. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/bulb/#x2)
- We planted tulip bulbs in the autumn. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/bulb/#x3)
- An onion is a bulb. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/bulb/#x4)
- The red liquid rose from the bulb of the thermometer. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/bulb/#x5)
- I had a light-bulb moment and solved the puzzle. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/bulb/#x6)
- The drops penetrated through the snowy covering down into the earth, and touched the flower-bulb, and talked of the bright world above. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/B/bulb/#x7)

### Note

Countable: one bulb, two bulbs. Never touch a bulb that has just been on; it can be very hot. Let an adult change bulbs, with the power off. In a circuit diagram a bulb is drawn as a circle with a cross inside.

## On Mova

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