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Definition of "pneumatic" [pneu•mat•ic]

  • Of or relating to air or other gases. (adjective)
  • Of or relating to pneumatics. (adjective)
  • Run by or using compressed air: a pneumatic drill. (adjective)
  • Filled with air, especially compressed air: a pneumatic tire. (adjective)
  • Zoology Having cavities filled with air, as the bones of certain birds. (adjective)

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 "pneumatic" in a sentence
  • "It's fitted with what they call a pneumatic cushion -- I mean, if anything goes wrong, the lift falls into a funnel shaped well, made of concrete, which forms a cushion of air, and so breaks the fall."
  • "Baltic newts are equipped with a new, normally peaceful, apparatus called the pneumatic drill which is capable of drilling ten metres deep into the best Swedish granite in an hour and can penetrate fifty or sixty metres deep into English chalk in the same time?"
  • ""I wasn't sure about the word pneumatic," Allison Black said."