Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

light bulb

noun

Definition of light bulb

  1. :  a glass bulb or tube that produces light when it is supplied with electricity <change a light bulb that has burned out>



Word by Word Definitions

lightplay
  1. :  something that makes vision possible

    :  the sensation aroused by stimulation of the visual receptors

    :  electromagnetic radiation of any wavelength that travels in a vacuum with a speed of about 186,281 miles (300,000 kilometers) per second

  1. :  having light :  bright

    :  not dark, intense, or swarthy in color or coloring :  pale

    :  medium in saturation and high in lightness

  1. :  to become light :  brighten

    :  to take fire

    :  to set fire to

  1. :  having little weight :  not heavy

    :  designed to carry a comparatively small load

    :  having relatively little weight in proportion to bulk

  1. :  lightly

    :  with little baggage

  1. :  dismount

    :  settle, alight

    :  to arrive by chance :  happen

bulbplay
  1. :  a resting stage of a plant (as the lily, onion, hyacinth, or tulip) that is usually formed underground and consists of a short stem base bearing one or more buds enclosed in overlapping membranous or fleshy leaves

    :  a fleshy structure (as a tuber or corm) resembling a bulb in appearance

    :  a plant having or developing from a bulb


LIGHT BULB Defined for Kids

light bulb

noun

Definition of light bulb

  1. :  a lamp in which a glow is produced by the heating of a wire by an electric current




Seen and Heard

What made you want to look up light bulb? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 13, 2016

a trying or distressing experience

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

16.96 pounds 2.2 pounds 196.5 pounds 100 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ