Skip to main content
bulb

bulb

166 1.3
A glass part of a lamp that makes light when electricity flows through it
  • noun
  • /bʌlb/
translation icon : bombilla
  • Make sure to check the wattage before buying a new bulb for your light fixture.
  • light bulb
  • electric bulb
  • incandescent bulb

The flashlights, the light bulbs, they're inside the helmets.

Autoplay Next

Examples

  • Technological improvements such as better light bulbs are part of the solution to the climate problem.

    Academic text (2011)
  • The only light came from the naked bulbs strung along the structural beams.

    Fiction book (1990)
  • If you turn on a switch and send a current through a bulb, you get light.

    Fiction book (1991)
  • Not a telephone or an electric light bulb in the house.

  • Ruth wanted to put a shade on the bulb, but I said no.

    Fiction book (1991)
  • I can see the LED bulb that is blinking.

  • The room was dimly lit by the bulbs from the hall outside.

    Fiction book (1990)
  • Carla pulled a string, snapping on a bare light bulb in a basement room.

    Fiction book (1992)
  • A bare little porch bulb invites us into our moon-flecked love nest.

  • The LED bulb provides bright light while using less energy than traditional bulbs.

Synonyms

lamp
vsbulb
274 1.0

Something that gives light for a room or table

is a specific electric type with a heated wire inside glass
light bulb
vsbulb
62 1.8

A glass object that makes light when electricity passes through it

expresses the same idea using the simpler everyday word
lightbulb
vsbulb
31 1.1

A small glass lamp with a wire inside that makes light when electricity flows

has the same meaning but uses the simpler common name
incandescent
vsbulb
12 4.4

A light bulb that makes light by a hot wire

is the general term for that same filamented glass light source
9 2.0

A light that gets power from wires, often from a bulb

is the specific everyday term for that filamented glass device
incandescent lamp
vsbulb
  • Specialized
1 4.1

A light bulb that makes light by heating a thin wire inside glass

is the general name for that same filamented glass device
1 2.1

A glass bulb with a thin wire that makes light when electricity passes through it

is the shorter, more familiar label for that same device
electric lamp
vsbulb
1 1.7

A light that uses electricity to shine

is narrower, focusing on the glass enclosed filament design

Idioms

1 5.1

Suddenly understand something when an idea appears in your mind

Compounds

62 1.8

A glass object that makes light when electricity passes through it

flash bulb
  • Archaic
1 3.5

A small lamp that gives a very bright short light for taking photos

A glass bulb with a thin wire that makes light when electricity passes through it

1 3.9

A sudden time when you understand something clearly

A bulb that uses less electricity than old bulbs, for example LED bulbs

olfactory bulb
  • Specialized
1 7.1

A rounded part at the base of the brain just above the nose that helps you smell

bulb syringe
  • Specialized
6.9

A small rubber device used to suck liquid from or put liquid into the nose and ear

9.8

A thin clear layer covering the white of the eye and the front of the eyeball

dry-bulb thermometer
  • Specialized
6.5

A device that measures air temperature with a dry bulb

A bulb that reduces blue light to protect sleep and eyes

8.8

A blood vessel that supplies blood to the bulb of the penis

A small blood vessel that carries blood to the bulb near the female genital opening

wet-bulb thermometer
  • Specialized
7.2

A small tool with a bulb covered in a wet cloth used to measure humidity

How Bright

floodlight
9 3.4
spotlight
49 2.9
bulb
166 1.3
lamp
274 1.0
candle
451 1.0
night-light
10 2.5

Surface Forms

bulb singular
bulbs plural

Etymology

Bulb comes from the old Latin word bulbus, which meant 'onion'. People later used the word for electric lights because the glass shape looks like an onion, so a light bulb is a round glass that gives light.