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Definition of "booster" []

  • One that boosts, as: (noun)
  • A device for increasing power or effectiveness. (noun)
  • An enthusiastic promoter, as of a sports team or school. (noun)
  • Electronics A radio-frequency amplifier. (noun)
  • The primary stage of a multistage rocket that provides the main thrust for launch, liftoff, and initial flight. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "booster" in a sentence
  • "Orion will fly, on what the booster is the question."
  • "Just moments ago in Washington the president spoke out about the economy, coming out of the gate saying it is clear that the economy has slowed, but he also said that growth package that he signed will help to put what he calls a booster shot into the economy."
  • "Both failures came when the seat was being used with its five-point harness; we found no problems in booster-seat mode."