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Meaning of aerator

aer•a•tor

Pronunciation: (âr'ā-tur, ā'u-rā"-), [key]
— n.
  1. an apparatus for aerating water or other fluids.
  2. a device for introducing air into a bin of wheat or other grain in order to prevent the accumulation of moisture, keeping it free of fungi and insects.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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