Word.ws English Dictionary

sealed beam

sealed beam noun: a type of electric lamp for producing a beam of light in which the filament is sealed inside a unit consisting of the reflector and lens so as to ensure the alignment of the beam and to protect the reflector from becoming dirty or tarnished.

Noun

sealed beam (plural sealed beams)

  1. A type of electric lamp for producing a beam of light in which the filament is sealed inside a unit consisting of the reflector and lens so as to ensure the alignment of the beam and to protect the reflector from becoming dirty or tarnished.
    • The new Sealed Beam Headlights are designed to maintain substantially their initial efficiency throughout their life.1940, Ralph A. Richardson, Optics and Wheels, General Motors Corporation, p. 25

Forms of sealed beam

pluralsealed beams

Questions about sealed beam

What does sealed beam mean?
Sealed beam means a type of electric lamp for producing a beam of light in which the filament is sealed inside a unit consisting of the reflector and lens so as to ensure the alignment of the beam and to protect the reflector from becoming dirty or tarnished.
What part of speech is sealed beam?
Sealed beam is a noun.
What is the plural of sealed beam?
The plural of sealed beam is sealed beams.

Words near sealed beam in the dictionary

  1. sealcoat
  2. Sealdah
  3. seale
  4. Seale and Sands
  5. sealed
  6. sealed beam
  7. sealed beams
  8. sealed bid
  9. sealed bids
  10. sealed in
  11. sealed off

Source and license

Adapted from Wiktionary: sealed beam (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “sealed beam.” Word.ws, https://word.ws/sealed_beam. Based on Wiktionary, CC BY-SA 4.0.