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Definition of "injection" []

  • The act of injecting. (noun)
  • Something that is injected, especially a dose of liquid medicine injected into the body. (noun)
  • Mathematics A function that is one-to-one. (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 "injection" in a sentence
  • "The dermal filler injection is injected in the ball of the foot to ease the pain caused by wearing high heels."
  • "The program, extended last week with a $2 billion cash injection, is bound to thin the herd."
  • "Locog, sponsors and coalition politicians, desperate for the Games to succeed both on their own terms and as a mid-term injection of flag waving optimism against a gloomy economic backdrop, must walk an increasingly fine line between encouraging them to get on board and hectoring them to do so."