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1

beam

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noun \ˈbēm\

Simple Definition of beam

  • : a line of light coming from a source (such as the sun or a headlight)

  • : a line of energy, particles, etc., that cannot be seen

  • : a long and heavy piece of wood or metal that is used as a support in a building or ship

Source: Merriam-Webster's Learner's Dictionary

Full Definition of beam

  1. 1 a :  a long piece of heavy often squared timber suitable for use in construction b :  a wood or metal cylinder in a loom on which the warp is wound c :  the part of a plow to which handles, standard, and coulter are attached d :  the bar of a balance from which scales hang e :  one of the principal horizontal supporting members (as of a building or ship) <a steel beam supporting a floor>; also :  boom, spar <the beam of a crane> f :  the extreme width of a ship at the widest part g :  an oscillating lever on a central axis receiving motion at one end from an engine connecting rod and transmitting it at the other

  2. 2 a :  a ray or shaft of light b :  a collection of nearly parallel rays (as X rays) or a stream of particles (as electrons) c :  a constant directional radio signal transmitted for the guidance of pilots; also :  the course indicated by a radio beam

  3. 3 :  the main stem of a deer's antler

  4. 4 :  the width of the buttocks

on the beam

  1. 1 :  following a guiding beam

  2. 2 :  proceeding or operating correctly

Examples of beam in a sentence

  1. a bright beam of light

  2. We saw the beams from their flashlights.

  3. the building's steel support beams



Origin and Etymology of beam

Middle English beem, from Old English bēam tree, beam; akin to Old High German boum tree


First Known Use: before 12th century

Other Wood Production Terms


2

beam

verb

Simple Definition of beam

  • : to smile happily

  • : to say (something) while smiling happily

  • : to send out beams of light or energy

Source: Merriam-Webster's Learner's Dictionary

Full Definition of beam

  1. transitive verb
  2. 1 :  to emit in beams or as a beam

  3. 2 :  to support with beams

  4. 3 a :  to transmit especially by satellite :  broadcast b :  to transmit (data) electronically c :  to direct to a particular audience

  5. intransitive verb
  6. 1 :  to send out beams of light

  7. 2 :  to smile with joy

Examples of beam in a sentence

  1. She beamed as she told us the good news.

  2. They stood beaming with satisfaction.

  3. We're getting married! he beamed.

  4. The sun beamed its light through the window.

  5. Pictures of the distant planet were beamed back to the Earth.



15th Century

First Known Use of beam

15th century



BEAM Defined for Kids

1

beam

play
noun \ˈbēm\

Definition of beam for Students

  1. 1 :  a long heavy piece of timber or metal used as a main horizontal support of a building or a ship <a ceiling beam>

  2. 2 :  a ray of light

  3. 3 :  a radio wave sent out from an airport to guide pilots




2

beam

play
verb

Definition of beam for Students

beamed

beaming

  1. 1 :  to send out beams of light <Sunlight was beaming through the window.>

  2. 2 :  to smile with joy <She beamed as she told us the good news.>

  3. 3 :  to aim a radio broadcast by use of a special antenna




Medical Dictionary

beam

play
noun \ˈbēm\

Medical Definition of beam

  1. 1:  a ray or shaft of light

  2. 2:  a collection of nearly parallel rays (as X-rays) or a stream of particles (as electrons)





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